<SEC-DOCUMENT>0001104659-20-074172.txt : 20200617
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<ACCEPTANCE-DATETIME>20200617160734
ACCESSION NUMBER:		0001104659-20-074172
CONFORMED SUBMISSION TYPE:	8-K
PUBLIC DOCUMENT COUNT:		18
CONFORMED PERIOD OF REPORT:	20200612
ITEM INFORMATION:		Entry into a Material Definitive Agreement
ITEM INFORMATION:		Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant
ITEM INFORMATION:		Other Events
ITEM INFORMATION:		Financial Statements and Exhibits
FILED AS OF DATE:		20200617
DATE AS OF CHANGE:		20200617

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			BLACK HILLS CORP /SD/
		CENTRAL INDEX KEY:			0001130464
		STANDARD INDUSTRIAL CLASSIFICATION:	ELECTRIC SERVICES [4911]
		IRS NUMBER:				460458824
		STATE OF INCORPORATION:			SD
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		8-K
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-31303
		FILM NUMBER:		20969799

	BUSINESS ADDRESS:	
		STREET 1:		7001 MT RUSHMORE RD
		STREET 2:		PO BOX 1400
		CITY:			RAPID CITY
		STATE:			SD
		ZIP:			57709
		BUSINESS PHONE:		6057212343

	MAIL ADDRESS:	
		STREET 1:		7001 MT RUSHMORE RD
		STREET 2:		PO BOX 1400
		CITY:			RAPID
		STATE:			SD
		ZIP:			57709

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	BLACK HILLS HOLDING CORP
		DATE OF NAME CHANGE:	20001222
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<p style="font: 18pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><b>UNITED STATES </b></p>

<p style="font: 18pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><b>SECURITIES AND EXCHANGE COMMISSION </b></p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><b>Washington, D.C. 20549</b></p>

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<p style="font: 14pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><b>CURRENT REPORT </b></p>

<p style="font: 14pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><b>Pursuant to Section 13 or 15(d)</b></p>

<p style="font: 14pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><b>of the Securities Exchange Act of 1934
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<p style="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><b>Not Applicable </b></p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">(Former name or former address, if changed
since last report)</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0pt 27.8pt 0pt 6.95pt">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; margin-left: 0in; text-indent: 0.25in; text-align: justify">Check the appropriate box
below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following
provisions (see General Instruction A.2. below):</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.25in"><span style="font-family: Wingdings"><span style="font-family: Wingdings"><span id="xdx_90A_edei--WrittenCommunications_c20200611__20200612_zFZNys0hL6A3"><ix:nonNumeric contextRef="From2020-06-11to2020-06-12" format="ixt:booleanfalse" name="dei:WrittenCommunications">&#168;</ix:nonNumeric></span></span></span>&#160;&#160;&#160;Written
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<p style="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.25in"><span style="font-family: Wingdings"><span id="xdx_905_edei--SolicitingMaterial_c20200611__20200612_zP7kHFyleAwg"><ix:nonNumeric contextRef="From2020-06-11to2020-06-12" format="ixt:booleanfalse" name="dei:SolicitingMaterial">&#168;</ix:nonNumeric></span></span>&#160;&#160;&#160;Soliciting materials pursuant to Rule 14a-12 under
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<p style="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.25in"><span style="font-family: Wingdings"><span id="xdx_907_edei--PreCommencementTenderOffer_c20200611__20200612_zKxWFwRQhqTi"><ix:nonNumeric contextRef="From2020-06-11to2020-06-12" format="ixt:booleanfalse" name="dei:PreCommencementTenderOffer">&#168;</ix:nonNumeric></span></span>&#160;&#160;&#160;Pre-commencement communications pursuant to Rule
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<p style="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.25in"><span style="font-family: Wingdings"><span id="xdx_90D_edei--PreCommencementIssuerTenderOffer_c20200611__20200612_z6IsmNlahhYd"><ix:nonNumeric contextRef="From2020-06-11to2020-06-12" format="ixt:booleanfalse" name="dei:PreCommencementIssuerTenderOffer">&#168;</ix:nonNumeric></span></span>&#160;&#160;&#160;Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))</p>

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<p style="font: 10pt Times New Roman, Times, Serif; margin: 0pt 27.8pt 0pt 6.95pt; text-align: center">Securities registered pursuant
to Section 12(b) of the Act:</p>

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<p style="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 24.95pt">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; margin-left: 0in; text-indent: 0.25in; text-align: justify">Indicate by check mark whether
the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (&#167; 230.405 of this chapter)
or Rule 12b-2 of the Securities Exchange Act of 1934 (&#167; 240.12b-2 of this chapter).</p>

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<p style="font: 10pt Times New Roman, Times, Serif; margin: 0pt 27.5pt 0pt 9pt; text-indent: 0.25in">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; margin-left: 0in; text-indent: 0.25in; text-align: justify">If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended
transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the
Exchange Act. <span style="font: 10pt Times New Roman, Times, Serif"><span style="font-family: Wingdings">&#168;</span></span></p>



<p style="margin: 0">&#160;</p>

<p style="margin: 0"></p>

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<p style="margin: 0">&#160;</p>

<p style="margin: 0"></p>

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<td style="width: 0.75in">Item 1.01</td><td>Entry into a Material Definitive Agreement.</td></tr></table>

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<p style="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-indent: 0.5in">On June 12, 2020, Black
Hills Corporation (the &#8220;<span style="text-decoration: underline">Company</span>&#8221; or &#8220;we&#8221;) entered into an Underwriting Agreement by and between
the Company and the several underwriters named in Schedule A thereto (the &#8220;<span style="text-decoration: underline">Underwriting Agreement</span>&#8221;). On June
17, 2020, we entered into the New Supplemental Indenture (as defined below). Each of the Underwriting Agreement and the New Supplemental
Indenture is further described below under Item 8.01 of this Current Report on Form 8-K, and such disclosure is incorporated by
reference into this Item 1.01.</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0pt 2.5pt 0pt 6.95pt; text-indent: 29.05pt">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-indent: 0.5in">Each of the Underwriting
Agreement and the New Supplemental Indenture contains representations and warranties, covenants and other terms that are customary
for such kinds of agreements. In addition, the Company has agreed to indemnify the underwriters against certain liabilities on
customary terms. Some of the underwriters and their affiliates have engaged in, and may in the future engage in, investment banking
and other commercial dealings, including but not limited to commercial lending services, with the Company, its direct or indirect
subsidiaries or its affiliates. They have received, or may in the future receive, customary fees and commissions for these transactions.</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0pt 2.5pt 0pt 6.95pt; text-indent: 29.05pt">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-indent: 0.5in">Copies of the Underwriting
Agreement and the New Supplemental Indenture are attached hereto as Exhibits 1.1 and 4.1 and are expressly incorporated by reference
herein and into our Registration Statement on Form S-3 (Registration No. 333-219705) (the &#8220;Registration Statement&#8221;).
Our description of such agreements is qualified in its entirety by reference to the actual terms thereof.</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&#160;</p>

<table cellpadding="0" cellspacing="0" style="font: bold 10pt Times New Roman, Times, Serif; width: 100%; margin-top: 0pt; margin-bottom: 0pt"><tr style="vertical-align: top">
<td style="width: 0.75in">Item 2.03</td><td style="padding-right: 26.4pt">Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement
of a Registrant.</td></tr></table>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><b>&#160;</b></p>

<p style="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-indent: 0.5in">The disclosure under Item 8.01 of this Current Report
on Form 8-K is incorporated herein by reference.</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&#160;</p>

<table cellpadding="0" cellspacing="0" style="font: bold 10pt Times New Roman, Times, Serif; width: 100%; margin-top: 0pt; margin-bottom: 0pt"><tr style="vertical-align: top">
<td style="width: 0.75in">Item 8.01</td><td>Other Events.</td></tr></table>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><b>&#160;</b></p>

<p style="font: italic bold 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-right: 0; margin-bottom: 0pt">Completion of Debt Offering</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><b><i>&#160;</i></b></p>

<p style="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-indent: 0.5in">On June 17, 2020, pursuant
to the Underwriting Agreement, the Company issued and sold an aggregate principal amount of $400 million of its 2.500% Notes due
2030 (the &#8220;<span style="text-decoration: underline">Notes</span>&#8221;). The aggregate gross consideration received by the Company (taking into account original
issue discount and underwriting discounts) for the sale of the Notes is $396.0 million.</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0pt 2.5pt 0pt 6.95pt; text-indent: 29.05pt">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-indent: 0.5in">The Notes were offered
pursuant to the Company&#8217;s Registration Statement, and the related Prospectus dated August 4, 2017 and Prospectus Supplement
dated June 12, 2020. We intend to apply the net proceeds from our sale of Notes, after payment of the costs and expenses of the
offering, for repayment of short-term debt, working capital and general corporate purposes, which may include, among other things,
capital expenditures, investments, other business opportunities and repayment or refinancing of outstanding debt.</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0pt 2.5pt 0pt 6.95pt; text-indent: 29.05pt">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-indent: 0.5in">Copies of opinions related
to the Notes are attached hereto as exhibits and are expressly incorporated by reference herein and into the Registration Statement.</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0pt 2.5pt 0pt 0">&#160;</p>

<p style="font: italic bold 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-right: 0; margin-bottom: 0pt">Terms of the Notes</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><b><i>&#160;</i></b></p>

<p style="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-indent: 0.5in">The Notes were issued pursuant
to the Indenture dated as of May 21, 2003 (the &#8220;<span style="text-decoration: underline">Base Indenture</span>&#8221;), between the Company and Wells Fargo Bank,
National Association (as successor to LaSalle Bank National Association), as trustee (the &#8220;<span style="text-decoration: underline">Trustee</span>&#8221;), as previously
supplemented and as further supplemented by an Ninth Supplemental Indenture entered into by the Company on June 17, 2020 (the &#8220;<span style="text-decoration: underline">New
Supplemental Indenture</span>&#8221; and together with the Base Indenture, the &#8220;<span style="text-decoration: underline">Indenture</span>&#8221;). The Notes bear interest
at a rate per annum of 2.500%, payable semi-annually in arrears on June 15 and December 15 of each year, beginning on December
15, 2020. The stated maturity for the Notes is June 15, 2030. The Notes are the unsecured senior obligations of the Company and
will rank equally with all of our existing and future unsecured and unsubordinated indebtedness and senior to all of our existing
and future subordinated indebtedness.</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0pt 2.5pt 0pt 6.95pt">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-indent: 0.5in">The Indenture provides
for customary events of default (subject in certain cases to customary grace and cure periods), which include among other things
nonpayment, breach of covenants in the Indenture and certain events of bankruptcy and insolvency. If an event of default occurs
and is continuing with respect to a series of Notes, the Trustee or holders of at least 25% in principal amount outstanding of
such series of Notes may declare the principal and the accrued and unpaid interest, if any, on all of the outstanding Notes of
such series to be due and payable. These events of default are subject to a number of important qualifications, limitations and
exceptions that are described in the Indenture.</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0pt 2.5pt 0pt 6.95pt">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-indent: 0.5in">A copy of the form of the
Notes is attached hereto as Exhibit 4.2 and is expressly incorporated by reference herein and into the Registration Statement.
The foregoing descriptions are qualified in their entirety by reference to the actual terms of the Notes.</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"></p>

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<p style="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&#160;</p>



<table cellpadding="0" cellspacing="0" style="font: bold 10pt Times New Roman, Times, Serif; width: 100%; margin-top: 0pt; margin-bottom: 0pt"><tr style="vertical-align: top">
<td style="width: 0.75in">Item 9.01</td><td>Financial Statements and Exhibits.</td></tr></table>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><b>&#160;</b></p>

<p style="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-right: 0; margin-bottom: 0pt"><b>(d)&#160;&#160;&#160;&#160;&#160;&#160;&#160;Exhibits</b></p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><b>&#160;</b></p>

<p style="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-indent: 0.5in">The following exhibits are furnished or filed herewith:</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&#160;</p>

<table cellpadding="0" cellspacing="0" style="font: 10pt Times New Roman, Times, Serif; width: 100%; margin-top: 0pt; margin-bottom: 0pt">                                                                                                                                          <tr style="vertical-align: top">
<td style="border-bottom: Black 1pt solid"><b>Number</b></td>
    <td style="padding-bottom: 1pt">&#160;</td><td style="text-align: center; border-bottom: Black 1pt solid"><b>Exhibit</b></td></tr>
                                                                                                                                          <tr style="vertical-align: top">
<td>&#160;</td>
    <td>&#160;</td><td>&#160;</td></tr>
<tr style="vertical-align: top">
<td style="width: 8%"><a href="tm2022285d4_ex1-1.htm" style="-sec-extract: exhibit">1.1</a></td>
    <td style="width: 2%">&#160;</td><td style="width: 90%"><a href="tm2022285d4_ex1-1.htm" style="-sec-extract: exhibit">Underwriting Agreement dated as of June 12, 2020 between Black Hills Corporation and the underwriters named therein.</a></td></tr>
<tr style="vertical-align: top">
<td><a href="tm2022285d4_ex4-1.htm" style="-sec-extract: exhibit">4.1</a></td>
    <td>&#160;</td><td style="padding-right: 13.45pt"><a href="tm2022285d4_ex4-1.htm" style="-sec-extract: exhibit">Ninth Supplemental Indenture dated as of June 17, 2020 between Black Hills Corporation and Wells
Fargo Bank, National Association (as successor to LaSalle Bank National Association), as trustee.</a></td></tr>
<tr style="vertical-align: top">
<td><a href="tm2022285d4_ex4-1.htm" style="-sec-extract: exhibit">4.2</a></td>
    <td>&#160;</td><td><a href="tm2022285d4_ex4-1.htm" style="-sec-extract: exhibit">Form of 2.500% Notes due 2030 (<i>included in Exhibit 4.1</i>)</a></td></tr>
<tr style="vertical-align: top">
<td><a href="tm2022285d4_ex5-1.htm" style="-sec-extract: exhibit">5.1</a></td>
    <td>&#160;</td><td><a href="tm2022285d4_ex5-1.htm" style="-sec-extract: exhibit">Opinion of Brian G. Iverson, Esq.</a></td></tr>
<tr style="vertical-align: top">
<td><a href="tm2022285d4_ex5-2.htm" style="-sec-extract: exhibit">5.2</a></td>
    <td>&#160;</td><td><a href="tm2022285d4_ex5-2.htm" style="-sec-extract: exhibit">Opinion of Faegre Drinker Biddle &#38; Reath LLP</a></td></tr>
<tr style="vertical-align: top">
<td><a href="tm2022285d4_ex5-1.htm" style="-sec-extract: exhibit">23.1</a></td>
    <td>&#160;</td><td><a href="tm2022285d4_ex5-1.htm" style="-sec-extract: exhibit">Consent of Brian G. Iverson, Esq. (<i>included in the opinion filed as Exhibit 5.1</i>)</a></td></tr>
<tr style="vertical-align: top">
<td><a href="tm2022285d4_ex5-2.htm" style="-sec-extract: exhibit">23.2</a></td>
    <td>&#160;</td><td><a href="tm2022285d4_ex5-2.htm" style="-sec-extract: exhibit">Consent of Faegre Drinker Biddle &#38; Reath (<i>included in the opinion filed as Exhibit 5.2</i>)</a></td></tr>
<tr style="vertical-align: top; text-align: justify">
<td style="text-align: left">104.1</td>
    <td>&#160;</td><td style="text-align: justify">Cover Page Interactive Data File (embedded within the
Inline XBRL document)</td>
</tr></table>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&#160;</p>

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<p style="font: 10pt Times New Roman, Times, Serif; margin: 0pt 82.2pt 0pt 82.15pt; text-align: center">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0pt 82.2pt 0pt 82.15pt; text-align: center"><span style="text-decoration: underline">SIGNATURES</span></p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-indent: 0.5in">Pursuant to the requirements
of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned
hereunto duly authorized.</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&#160;</p>

<table cellpadding="0" cellspacing="0" style="font: 10pt Times New Roman, Times, Serif; border-collapse: collapse; width: 100%">
<tr style="font: 10pt Times New Roman, Times, Serif; vertical-align: bottom">
    <td>&#160;</td>
    <td colspan="2" style="font: 10pt Times New Roman, Times, Serif"><span style="font: 10pt Times New Roman, Times, Serif">BLACK
    HILLS CORPORATION</span></td></tr>
<tr style="font: 10pt Times New Roman, Times, Serif; vertical-align: bottom">
    <td>&#160;</td>
    <td colspan="2" style="font: 10pt Times New Roman, Times, Serif"><span style="font: 10pt Times New Roman, Times, Serif">&#160;</span></td></tr>
<tr style="font: 10pt Times New Roman, Times, Serif; vertical-align: bottom">
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    <td style="font: 10pt Times New Roman, Times, Serif; width: 3%"><span style="font: 10pt Times New Roman, Times, Serif">By:&#160; </span></td>
    <td style="border-bottom: Black 1pt solid; font: 10pt Times New Roman, Times, Serif; width: 47%"><span style="font: 10pt Times New Roman, Times, Serif">/s/ Richard W. Kinzley</span></td></tr>
<tr style="font: 10pt Times New Roman, Times, Serif; vertical-align: bottom">
    <td>&#160;</td>
    <td style="font: 10pt Times New Roman, Times, Serif">&#160;</td>
    <td style="font: 10pt Times New Roman, Times, Serif"><span style="font: 10pt Times New Roman, Times, Serif">Richard W. Kinzley</span></td></tr>
<tr style="font: 10pt Times New Roman, Times, Serif; vertical-align: bottom">
    <td>&#160;</td>
    <td style="font: 10pt Times New Roman, Times, Serif">&#160;</td>
    <td style="font: 10pt Times New Roman, Times, Serif"><span style="font: 10pt Times New Roman, Times, Serif">Senior Vice President and Chief Financial Officer</span></td></tr>
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<p style="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-right: 0; margin-bottom: 0pt">Date: June 17, 2020</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&#160;</p>

<p style="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"></p>

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<DESCRIPTION>EXHIBIT 1.1
<TEXT>
<HTML>
<HEAD>
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<BODY STYLE="font: 10pt Times New Roman, Times, Serif">

<P STYLE="margin: 0">&nbsp;</P>

<P STYLE="text-align: right; margin: 0"><B>Exhibit 1.1</B></P>

<P STYLE="margin: 0">&nbsp;</P>

<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">Black Hills Corporation</P>

<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">$400,000,000 2.500% Notes due 2030</P>

<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><U>UNDERWRITING AGREEMENT</U></P>

<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: right">June 12, 2020</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: right">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Wells Fargo Securities, LLC</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">550 South Tryon Street &ndash; 5th Floor</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Charlotte, North Carolina 28202</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">J.P. Morgan Securities LLC</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">383 Madison Avenue</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">New York, New York 10179</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">RBC Capital Markets, LLC</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Brookfield Place</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">200 Vesey Street, 8th Floor</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">New York, New York 10281</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">As Representatives (the &ldquo;<B>Representatives</B>&rdquo;)
of the Several Underwriters</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Ladies and Gentlemen:</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in"><FONT STYLE="font-family: Times New Roman, Times, Serif">1.
</FONT><I>Introductory</I>. Black Hills Corporation, a South Dakota corporation (the &ldquo;<B>Company</B>&rdquo;), agrees with
the several Underwriters named in Schedule A hereto (the &ldquo;<B>Underwriters</B>&rdquo;) to issue and sell to the several Underwriters
$400,000,000 aggregate principal amount of its 2.500% Notes due 2030 (the &ldquo;<B>Offered Securities</B>&rdquo;). The Offered
Securities will be issued under an indenture dated as of May 21, 2003, between the Company and Wells Fargo Bank, National Association
(as successor to LaSalle Bank National Association), as Trustee (the &ldquo;<B>Trustee</B>&rdquo;) (the &ldquo;<B>Base Indenture</B>&rdquo;),
as supplemented by a first supplemental indenture dated as of May 21, 2003, between the Company and the Trustee, a second supplemental
indenture dated as of May 14, 2009, between the Company and the Trustee, a third supplemental indenture dated as of July 16, 2010,
between the Company and the Trustee, a fourth supplemental indenture dated as of November 19, 2013 between the Company and the
Trustee, a fifth supplemental indenture dated as of January 13, 2016, between the Company and the Trustee, a sixth supplemental
indenture dated as of August 19, 2016, between the Company and the Trustee, a seventh supplemental indenture dated as of August
17, 2018, between the Company and the Trustee, an eighth supplemental indenture dated as of October 3, 2019 and a ninth supplemental
indenture to be dated as of the Closing Date (as defined below) between the Company and the Trustee with respect to the Offered
Securities (the &ldquo;<B>Supplemental Indenture</B>&rdquo; and, the Base Indenture as supplemented by such first, second, third,
fourth, fifth, sixth, seventh and eighth supplemental indentures and the Supplemental Indenture, the &ldquo;<B>Indenture</B>&rdquo;).</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in"><FONT STYLE="font-family: Times New Roman, Times, Serif">2.
</FONT><I>Representations and Warranties of the Company</I>. The Company represents and warrants to, and agrees with, the several
Underwriters that:</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in"><FONT STYLE="font-family: Times New Roman, Times, Serif">(a) </FONT><I>Filing
and Effectiveness of Registration Statement; Certain Defined Terms</I>. The Company has filed with the Commission a
registration statement on Form S-3 (No. 333-219705), including a related prospectus or prospectuses relating to the Offered
Securities, covering the registration of the Offered Securities under the Act, which has become effective.
&ldquo;<B>Registration Statement</B>&rdquo; at any particular time means such registration statement in the form then filed
with the Commission, including any other amendment thereto, any document incorporated by reference therein and all 430B
Information and all 430C Information with respect to such registration statement, that in any case has not been superseded or
modified. &ldquo;<B>Registration Statement</B>&rdquo; without reference to a time means the Registration Statement as of the
Effective Time. For purposes of this definition, 430B Information shall be considered to be included in the Registration
Statement as of the time specified in Rule 430B.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in"></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">For purposes of this Agreement:</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&ldquo;<B>430B Information</B>&rdquo; means
information included in a prospectus relating to the Offered Securities then deemed to be a part of the Registration Statement
pursuant to Rule 430B(e) or retroactively deemed to be a part of the Registration Statement pursuant to Rule 430B(f).</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&ldquo;<B>430C Information</B>&rdquo; means
information included in a prospectus relating to the Offered Securities then deemed to be a part of the Registration Statement
pursuant to Rule 430C.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&ldquo;<B>Act</B>&rdquo; means the Securities
Act of 1933, as amended.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&ldquo;<B>Applicable Time</B>&rdquo; means
approximately 3:00 p.m. (Eastern time) on the date of this Agreement.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&ldquo;<B>Closing Date</B>&rdquo; has the
meaning defined in Section 3 hereof.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&ldquo;<B>Commission</B>&rdquo; means the
Securities and Exchange Commission.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&ldquo;<B>Effective Time</B>&rdquo; of the
Registration Statement relating to the Offered Securities means the time of the first contract of sale for the Offered Securities.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&ldquo;<B>Exchange Act</B>&rdquo; means
the Securities Exchange Act of 1934, as amended.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&ldquo;<B>Final Prospectus</B>&rdquo; means
the Statutory Prospectus that discloses the public offering price, other 430B Information and other final terms of the Offered
Securities and otherwise satisfies Section 10(a) of the Act.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&ldquo;<B>General Use Issuer Free Writing
Prospectus</B>&rdquo; means any Issuer Free Writing Prospectus that is intended for general distribution to prospective investors,
as evidenced by its being so specified in Schedule B to this Agreement.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&ldquo;<B>Issuer Free Writing Prospectus</B>&rdquo;
means any &ldquo;issuer free writing prospectus&rdquo;, as defined in Rule 433, relating to the Offered Securities in the form
filed or required to be filed with the Commission or, if not required to be filed, in the form retained in the Company&rsquo;s
records pursuant to Rule 433(g).</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&ldquo;<B>Limited Use Issuer Free Writing
Prospectus</B>&rdquo; means any Issuer Free Writing Prospectus that is not a General Use Issuer Free Writing Prospectus.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&ldquo;<B>Rules and Regulations</B>&rdquo;
means the rules and regulations of the Commission.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&ldquo;<B>Securities Laws</B>&rdquo; means,
collectively, the Sarbanes-Oxley Act of 2002, as amended (&ldquo;<B>Sarbanes-Oxley</B>&rdquo;), the Act, the Exchange Act, the
Trust Indenture Act, the Rules and Regulations, the auditing principles, rules, standards and practices applicable to auditors
of &ldquo;issuers&rdquo; (as defined in Sarbanes-Oxley) promulgated or approved by the Public Company Accounting Oversight Board
and, as applicable, the rules of the New York Stock Exchange and the Nasdaq Stock Market (&ldquo;<B>Exchange Rules</B>&rdquo;).</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&ldquo;<B>Statutory Prospectus</B>&rdquo;
with reference to any particular time means the prospectus relating to the Offered Securities that is included in the Registration
Statement immediately prior to that time, including all 430B Information and all 430C Information with respect to the Registration
Statement. For purposes of the foregoing definition, 430B Information shall be considered to be included in the Statutory Prospectus
only as of the actual time that form of prospectus (including a prospectus supplement) is filed with the Commission pursuant to
Rule 424(b) and not retroactively.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in"></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&ldquo;<B>Trust Indenture Act</B>&rdquo;
means the Trust Indenture Act of 1939, as amended.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">Unless otherwise specified, a reference
to a &ldquo;rule&rdquo; is to the indicated rule under the Act.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in"><FONT STYLE="font-family: Times New Roman, Times, Serif">(b)
</FONT><I>Compliance with Securities Act Requirements</I>. (i) (A) At the time the Registration Statement initially became effective,
(B) at the time of each amendment thereto for the purposes of complying with Section 10(a)(3) of the Act (whether by post-effective
amendment, incorporated report or form of prospectus), (C) at the Effective Time relating to the Offered Securities and (D) on
the Closing Date, the Registration Statement conformed and will conform in all material respects to the requirements of the Act,
the Trust Indenture Act and the Rules and Regulations and did not and will not include any untrue statement of a material fact
or omit to state any material fact required to be stated therein or necessary to make the statements therein not misleading and
(ii) (A) on its date, (B) at the time of filing the Final Prospectus pursuant to Rule 424(b) and (C) on the Closing Date, the Final
Prospectus will conform in all material respects to the requirements of the Act, the Trust Indenture Act and the Rules and Regulations,
and will not include any untrue statement of a material fact or omit to state any material fact required to be stated therein or
necessary to make the statements therein not misleading. The preceding sentence does not apply to statements in or omissions from
any such document based upon written information furnished to the Company by any Underwriter through the Representatives specifically
for use therein, it being understood and agreed that the only such information is that described as such in Section 8(b) hereof.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in"><FONT STYLE="font-family: Times New Roman, Times, Serif">(c)
</FONT><I>Automatic Shelf Registration Statement</I>. (i) <I>Well-Known Seasoned Issuer Status</I>. (A) At the time of initial
filing of the Registration Statement, (B) at the time of the most recent amendment thereto for the purposes of complying with Section
10(a)(3) of the Act (whether such amendment was by post-effective amendment, incorporated report filed pursuant to Section 13 or
15(d) of the Exchange Act or form of prospectus), and (C) at the time the Company or any person acting on its behalf (within the
meaning, for this clause only, of Rule 163(c)) made any offer relating to the Offered Securities in reliance on the exemption of
Rule 163, the Company was a &ldquo;well known seasoned issuer&rdquo; as defined in Rule 405, including not having been an &ldquo;ineligible
issuer&rdquo; as defined in Rule 405.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.75in; text-indent: 0.25in"><FONT STYLE="font-family: Times New Roman, Times, Serif">(ii)
</FONT><I>Effectiveness of Automatic Shelf Registration Statement</I>. The Registration Statement is an &ldquo;automatic shelf
registration statement&rdquo;, as defined in Rule 405, that initially became effective within three years of the date of this Agreement.
If immediately prior to the Renewal Deadline (as hereinafter defined), any of the Offered Securities remain unsold by the Underwriters,
the Company will prior to the Renewal Deadline file, if it has not already done so and is eligible to do so, a new automatic shelf
registration statement relating to the Offered Securities, in a form reasonably satisfactory to the Representatives. If the Company
is no longer eligible to file an automatic shelf registration statement, the Company will prior to the Renewal Deadline, if it
has not already done so, file a new shelf registration statement relating to the Offered Securities, in a form reasonably satisfactory
to the Representatives, and will use its best efforts to cause such registration statement to be declared effective within 180
days after the Renewal Deadline. The Company will take all other action necessary or appropriate to permit the public offering
and sale of the Offered Securities to continue as contemplated in the expired registration statement relating to the Offered Securities.
References herein to the Registration Statement shall include such new automatic shelf registration statement or such new shelf
registration statement, as the case may be. &ldquo;<B>Renewal Deadline</B>&rdquo; means the third anniversary of the initial effective
time of the Registration Statement.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.75in; text-indent: 0.25in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.75in; text-indent: 0.25in"><FONT STYLE="font-family: Times New Roman, Times, Serif">(iii) </FONT><I>Eligibility
to Use Automatic Shelf Registration Form</I>. The Company has not received from the Commission any notice pursuant to Rule
401(g)(2) objecting to use of the automatic shelf registration statement form. If at any time when Offered Securities remain
unsold by the Underwriters the Company receives from the Commission a notice pursuant to Rule 401(g)(2) or otherwise ceases
to be eligible to use the automatic shelf registration statement form, the Company will (A) promptly notify the
Representatives, (B) promptly file a new registration statement or post-effective amendment on the proper form relating to
the Offered Securities, in a form reasonably satisfactory to the Representatives, (C) use its best efforts to cause such
registration statement or post-effective amendment to be declared effective as soon as practicable, and (D) promptly notify
the Representatives of such effectiveness. The Company will take all other action necessary or appropriate to permit the
public offering and sale of the Offered Securities to continue as contemplated in the registration statement that was the
subject of the Rule 401(g)(2) notice or for which the Company has otherwise become ineligible. References herein to the
Registration Statement shall include such new registration statement or post-effective amendment, as the case may be.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.75in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.75in"></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.75in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.75in; text-indent: 0.25in"><FONT STYLE="font-family: Times New Roman, Times, Serif">(iv)
</FONT><I>Filing Fees</I>. The Company has paid or shall pay the required Commission filing fees relating to the Offered Securities
within the time required by Rule 456(b)(1) without regard to the proviso therein and otherwise in accordance with Rules 456(b)
and 457(r).</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.75in; text-indent: 0.25in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in"><FONT STYLE="font-family: Times New Roman, Times, Serif">(d)
</FONT><I>Ineligible Issuer Status</I>. (i) At the earliest time after the filing of the Registration Statement that the Company
or another offering participant made a bona fide offer (within the meaning of Rule 164(h)(2)) of the Offered Securities and (ii)
at the date of this Agreement, the Company was not and is not an &ldquo;ineligible issuer&rdquo;, as defined in Rule 405, including
(A) the Company or any subsidiary of the Company in the preceding three years not having been convicted of a felony or misdemeanor
or having been made the subject of a judicial or administrative decree or order as described in Rule 405 and (B) the Company in
the preceding three years not having been the subject of a bankruptcy petition or insolvency or similar proceeding, not having
had a registration statement be the subject of a proceeding under Section 8 of the Act and not being the subject of a proceeding
under Section 8A of the Act in connection with the offering of the Offered Securities, all as described in Rule 405.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in"><FONT STYLE="font-family: Times New Roman, Times, Serif">(e)
</FONT><I>General Disclosure Package</I>. As of the Applicable Time, neither (i) the General Use Issuer Free Writing Prospectus(es)
issued at or prior to the Applicable Time and the preliminary prospectus supplement, dated June 12, 2020, including the base prospectus
of the Company, dated August 4, 2017 (which is the most recent Statutory Prospectus distributed to investors generally), and the
other information, if any, stated in Schedule B to this Agreement to be included in the General Disclosure Package, all considered
together (collectively, the &ldquo;<B>General Disclosure Package</B>&rdquo;), nor (ii) any individual Limited Use Issuer Free Writing
Prospectus, when considered together with the General Disclosure Package, included any untrue statement of a material fact or omitted
to state any material fact necessary in order to make the statements therein, in the light of the circumstances under which they
were made, not misleading. The preceding sentence does not apply to statements in or omissions from any Statutory Prospectus or
any Issuer Free Writing Prospectus in reliance upon and in conformity with written information furnished to the Company by any
Underwriter through the Representatives specifically for use therein, it being understood and agreed that the only such information
furnished by any Underwriter consists of the information described as such in Section 8(b) hereof.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in"><FONT STYLE="font-family: Times New Roman, Times, Serif">(f) </FONT><I>Issuer
Free Writing Prospectuses</I>. Each Issuer Free Writing Prospectus, as of its issue date and at all subsequent times through
the completion of the public offer and sale of the Offered Securities or until any earlier date that the Company notified or
notifies the Representatives as described in the next sentence, did not, does not and will not include any information that
conflicted, conflicts or will conflict with the information then contained in the Registration Statement. If at any time
following issuance of an Issuer Free Writing Prospectus there occurred or occurs an event or development as a result of which
such Issuer Free Writing Prospectus conflicted or would conflict with the information then contained in the Registration
Statement or as a result of which such Issuer Free Writing Prospectus, if republished immediately following such event or
development, would include an untrue statement of a material fact or omitted or would omit to state a material fact necessary
in order to make the statements therein, in the light of the circumstances under which they were made, not misleading, (i)
the Company has promptly notified or will promptly notify the Representatives and (ii) the Company has promptly amended or
will promptly amend or supplement such Issuer Free Writing Prospectus to eliminate or correct such conflict, untrue statement
or omission.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in"><FONT STYLE="font-family: Times New Roman, Times, Serif">(g)
</FONT><I>Good Standing of the Company</I>. The Company has been duly incorporated and is existing and in good standing under the
laws of the State of South Dakota, with power and authority (corporate and other) to own its properties and conduct its business
as described in the Registration Statement, the General Disclosure Package and the Final Prospectus; and the Company is duly qualified
to do business as a foreign corporation in good standing in all other jurisdictions in which its ownership or lease of property
or the conduct of its business requires such qualification, except where the failure to be so qualified and in good standing would
not, individually or in the aggregate, result in a material adverse effect on the condition (financial or otherwise), results of
operations, business, properties or prospects of the Company and its subsidiaries taken as a whole (&ldquo;<B>Material Adverse
Effect</B>&rdquo;).</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in"></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in"><FONT STYLE="font-family: Times New Roman, Times, Serif">(h)
</FONT><I>Subsidiaries</I>. Each subsidiary of the Company has been duly incorporated or organized, as the case may be, and is
existing and in good standing under the laws of the jurisdiction of its incorporation or organization, as the case may be, with
power and authority (corporate and other) to own its properties and conduct its business as described in the Registration Statement,
the General Disclosure Package and the Final Prospectus, except where the failure to be so qualified and in good standing would
not, individually or in the aggregate, result in a Material Adverse Effect; and each subsidiary of the Company is duly qualified
to do business as a foreign corporation, limited partnership, general partnership or limited liability company, as the case may
be, in good standing in all other jurisdictions in which its ownership or lease of property or the conduct of its business requires
such qualification, except where the failure to be so qualified and in good standing would not, individually or in the aggregate,
result in a Material Adverse Effect; all of the issued and outstanding capital stock or partnership or limited liability company
interests, as the case may be, of each subsidiary of the Company has been duly authorized and validly issued and, with respect
to the capital stock of each subsidiary that is a corporation, is fully paid and nonassessable; and, except as disclosed in the
Registration Statement, the General Disclosure Package and the Final Prospectus, the capital stock or partnership or limited liability
company interests, as the case may be, of each subsidiary owned by the Company, directly or through subsidiaries, is owned free
from liens, encumbrances and defects.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in"><FONT STYLE="font-family: Times New Roman, Times, Serif">(i)
</FONT><I>The Indenture</I>. The Base Indenture has been duly authorized, executed and delivered by the Company and has been duly
qualified under the Trust Indenture Act. The Supplemental Indenture has been duly authorized by the Company and, when executed
and delivered by the Company and assuming due authorization, execution and delivery by the Trustee, the Indenture will constitute
a valid and legally binding obligation of the Company, enforceable in accordance with its terms, subject to bankruptcy, insolvency,
fraudulent transfer, reorganization, moratorium and similar laws of general applicability relating to or affecting creditors&rsquo;
rights and to general equity principles.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in"><FONT STYLE="font-family: Times New Roman, Times, Serif">(j)
</FONT><I>The Offered Securities</I>. The Offered Securities are in the form contemplated by the Indenture and have been duly authorized
by the Company and, when issued and delivered pursuant to the Indenture to and paid for by the Underwriters in accordance with
the terms of this Agreement, will have been duly executed, authenticated, issued and delivered by the Company and will constitute
valid and legally binding obligations of the Company, enforceable in accordance with their terms, and be entitled to the benefits
provided by the Indenture, subject in each case to bankruptcy, insolvency, fraudulent transfer, reorganization, moratorium and
similar laws of general applicability relating to or affecting creditors&rsquo; rights and to general equity principles.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in"><FONT STYLE="font-family: Times New Roman, Times, Serif">(k) </FONT><I>No
Finder&rsquo;s Fee</I>. Except as disclosed in the Registration Statement, the General Disclosure Package and the Final
Prospectus, there are no contracts, agreements or understandings between the Company and any person that would give rise to a
valid claim against the Company or any Underwriter for a brokerage commission, finder&rsquo;s fee or other like payment in
connection with this offering.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in"><FONT STYLE="font-family: Times New Roman, Times, Serif">(l)
</FONT><I>Registration Rights</I>. Except as disclosed in the Registration Statement, the General Disclosure Package and the Final
Prospectus, there are no contracts, agreements or understandings between the Company and any person granting such person the right
to require the Company to file a registration statement under the Act with respect to any securities of the Company owned or to
be owned by such person or to require the Company to include such securities in the securities registered pursuant to a Registration
Statement or in any securities being registered pursuant to any other registration statement filed by the Company under the Act
(collectively, &ldquo;<B>registration rights</B>&rdquo;), and any person to whom the Company has granted registration rights has
agreed, if necessary, not to exercise such rights until after the expiration of the Lock-Up Period referred to in Section 5 hereof.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in"><FONT STYLE="font-family: Times New Roman, Times, Serif">(m)
</FONT><I>Absence of Further Requirements</I>. No consent, approval, authorization, or order of, or filing or registration with,
any person (including any governmental agency or body or any court) is required for the consummation of the transactions contemplated
by this Agreement or the Indenture in connection with the offering, issuance and sale of the Offered Securities by the Company,
except such as have been obtained or made and such as may be required under state securities laws.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in"></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in"><FONT STYLE="font-family: Times New Roman, Times, Serif">(n)
</FONT><I>Title to Property</I>. Except as disclosed in the Registration Statement, the General Disclosure Package and the Final
Prospectus, the Company and its subsidiaries have good and marketable title to all real properties and all other properties and
assets owned by them that are material to the Company and its subsidiaries taken as a whole, in each case free from liens, charges,
encumbrances and defects that would materially affect the value thereof or materially interfere with the use made or to be made
thereof by them and, except as disclosed in the Registration Statement, the General Disclosure Package and the Final Prospectus,
the Company and its subsidiaries hold any leased real or personal property that is material to the Company and its subsidiaries
taken as a whole under valid and enforceable leases with no terms or provisions that would materially interfere with the use made
or to be made thereof by them.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in"><FONT STYLE="font-family: Times New Roman, Times, Serif">(o)
</FONT><I>Absence of Defaults and Conflicts Resulting from Transaction</I>. The execution, delivery and performance of this Agreement
and the Indenture, and the issuance and sale of the Offered Securities and compliance with the terms and provisions thereof, will
not result in a breach or violation of any of the terms and provisions of, or constitute a default or a Debt Repayment Triggering
Event (as defined below) under, or result in the imposition of any lien, charge or encumbrance upon any property or assets of the
Company or any of its subsidiaries pursuant to, (i) the charter or by-laws or other organizational documents of the Company or
any of its subsidiaries, (ii) any statute, rule, regulation or order of any governmental agency or body or any court, domestic
or foreign, having jurisdiction over the Company or any of its subsidiaries or any of their properties, or (iii) any agreement
or instrument to which the Company or any of its subsidiaries is a party or by which the Company or any of its subsidiaries is
bound or to which any of the properties of the Company or any of its subsidiaries is subject, except, in the case of clauses (ii)
and (iii), as would not, individually or in the aggregate, result in a Material Adverse Effect. A &ldquo;<B>Debt Repayment Triggering
Event</B>&rdquo; means any event or condition that gives, or with the giving of notice or lapse of time would give, the holder
of any note, debenture, or other evidence of indebtedness (or any person acting on such holder&rsquo;s behalf) the right to require
the repurchase, redemption or repayment of all or a portion of such indebtedness by the Company or any of its subsidiaries.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in"><FONT STYLE="font-family: Times New Roman, Times, Serif">(p) </FONT><I>Absence
of Existing Defaults and Conflicts</I>. Neither the Company nor any of its subsidiaries is in violation of its respective
charter, by-laws or organizational documents or in default (or with the giving of notice or lapse of time would be in
default) under any existing obligation, agreement, covenant or condition contained in any indenture, loan agreement,
mortgage, lease or other agreement or instrument to which any of them is a party or by which any of them is bound or to which
any of the properties of any of them is subject, except such defaults that would not, individually or in the aggregate,
result in a Material Adverse Effect.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in"><FONT STYLE="font-family: Times New Roman, Times, Serif">(q)
</FONT><I>Authorization of Agreement</I>. This Agreement has been duly authorized, executed and delivered by the Company.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in"><FONT STYLE="font-family: Times New Roman, Times, Serif">(r)
</FONT><I>Possession of Licenses</I>. The Company and its subsidiaries possess, and are in compliance with the terms of, all adequate
certificates, authorizations, franchises, licenses and permits (&ldquo;<B>Licenses</B>&rdquo;) necessary or material to the conduct
of the business now conducted or proposed in the General Disclosure Package to be conducted by them and have not received any notice
of proceedings relating to the revocation or modification of any Licenses that, if determined adversely to the Company or any of
its subsidiaries, would individually or in the aggregate have a Material Adverse Effect.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in"><FONT STYLE="font-family: Times New Roman, Times, Serif">(s)
</FONT><I>Absence of Labor Dispute</I>. No labor dispute with the employees of the Company or any of its subsidiaries exists or,
to the knowledge of the Company, is imminent that could have a Material Adverse Effect.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in"></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in"><FONT STYLE="font-family: Times New Roman, Times, Serif">(t)
</FONT><I>Possession of Intellectual Property</I>. The Company and its subsidiaries own, possess, or can acquire on reasonable
terms, adequate trademarks, trade names and other rights to inventions, know-how, patents, copyrights, confidential information
and other intellectual property (collectively, &ldquo;<B>intellectual property rights</B>&rdquo;) necessary to conduct the business
now operated by them, or presently employed by them, and have not received any notice of infringement of or conflict with asserted
rights of others with respect to any intellectual property rights that, if determined adversely to the Company or any of its subsidiaries,
would individually or in the aggregate have a Material Adverse Effect.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in"><FONT STYLE="font-family: Times New Roman, Times, Serif">(u)
</FONT><I>Environmental Laws</I>. Except as disclosed in the Registration Statement, the General Disclosure Package and the Final
Prospectus, neither the Company nor any of its subsidiaries is in violation of any statute, any rule, regulation, decision or order
of any governmental agency or body or any court, domestic or foreign, relating to the use, disposal or release of hazardous or
toxic substances or relating to the protection or restoration of the environment or human exposure to hazardous or toxic substances
(collectively, &ldquo;<B>environmental laws</B>&rdquo;), owns or operates any real property contaminated with any substance that
is subject to any environmental laws, is liable for any off-site disposal or contamination pursuant to any environmental laws,
or is subject to any claim relating to any environmental laws, which violation, contamination, liability or claim would individually
or in the aggregate have a Material Adverse Effect; and the Company is not aware of any pending investigation which might lead
to such a claim.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in"><FONT STYLE="font-family: Times New Roman, Times, Serif">(v)
</FONT><I>Accurate Disclosure</I>. The statements in the Registration Statement, General Disclosure Package and the Final Prospectus
under the headings &ldquo;Description of the Notes&rdquo;, &ldquo;Description of Senior Debt Securities&rdquo;, &ldquo;Material
U.S. Federal Income Tax Consequences&rdquo; and &ldquo;Underwriting (Conflicts of Interest)&rdquo;, insofar as such statements
summarize legal matters, agreements, documents or proceedings discussed therein, are accurate and fair summaries of such legal
matters, agreements, documents or proceedings in all material respects and present the information required to be shown.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in"><FONT STYLE="font-family: Times New Roman, Times, Serif">(w)
</FONT><I>Absence of Manipulation</I>. The Company has not taken, directly or indirectly, any action that is designed to or that
has constituted or that would reasonably be expected to cause or result in the stabilization or manipulation of the price of any
security of the Company to facilitate the sale or resale of the Offered Securities.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in"></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in"><FONT STYLE="font-family: Times New Roman, Times, Serif">(x)
</FONT><I>Internal Controls and Compliance with the Sarbanes-Oxley Act</I>. Except as set forth in the Registration Statement,
the General Disclosure Package and the Final Prospectus, the Company, its subsidiaries and the Company&rsquo;s Board of Directors
(the &ldquo;<B>Board</B>&rdquo;) are in compliance in all material respects with Sarbanes-Oxley and all applicable
Exchange Rules. The Company maintains a system of internal controls, including, but not limited to, disclosure controls and procedures,
internal controls over accounting matters and financial reporting, an internal audit function and legal and regulatory compliance
controls (collectively, &ldquo;<B>Internal Controls</B>&rdquo;) that comply in all material respects with the Securities Laws and
are sufficient to provide reasonable assurances that (i) transactions are executed in accordance with management&rsquo;s general
or specific authorizations, (ii) transactions are recorded as necessary to permit preparation of financial statements in conformity
with generally accepted accounting principles in the United States and to maintain accountability for assets, (iii) access to assets
is permitted only in accordance with management&rsquo;s general or specific authorization and (iv) the recorded accountability
for assets is compared with the existing assets at reasonable intervals and appropriate action is taken with respect to any differences.
The Internal Controls are, or upon consummation of the offering of the Offered Securities will be, overseen by the Audit Committee
(the &ldquo;<B>Audit Committee</B>&rdquo;) of the Board in accordance with Exchange Rules. Since the date of the filing of the
Company&rsquo;s Annual Report on Form 10-K for the fiscal year ended December 31, 2019, the Company has not publicly disclosed
or reported to the Audit Committee or the Board, and within the next 90 days the Company does not reasonably expect to publicly
disclose or report to the Audit Committee or the Board, (i) any significant deficiency in the design or operation of Internal Controls
that could adversely affect the Company&rsquo;s ability to record, process, summarize and report financial data, any material weakness
in Internal Controls, any material change in Internal Controls or any fraud involving management or other employees who have a
significant role in Internal Controls (each, an &ldquo;<B>Internal Control Event</B>&rdquo;) or (ii) any material violation of,
or failure to comply with, the Securities Laws.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in"><FONT STYLE="font-family: Times New Roman, Times, Serif">(y)
</FONT><I>Absence of Accounting Issues</I>. A member of the Audit Committee has confirmed to the Chief Executive Officer, Chief
Financial Officer or General Counsel of the Company that, except as set forth in the Registration Statement, the General Disclosure
Package and the Final Prospectus, the Audit Committee is not reviewing or investigating, and neither the Company&rsquo;s independent
auditors nor its internal auditors have recommended that the Audit Committee review or investigate, (i) adding to, deleting, changing
the application of, or changing the Company&rsquo;s disclosure with respect to, any of the Company&rsquo;s material accounting
policies&#894; (ii) any matter which could result in a restatement of the Company&rsquo;s financial statements for any annual or
interim period during the current or prior three fiscal years; or (iii) any Internal Control Event.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in"><FONT STYLE="font-family: Times New Roman, Times, Serif">(z)
</FONT><I>Litigation</I>. Except as disclosed in the Registration Statement, the General Disclosure Package and the Final Prospectus,
there are no pending actions, suits or proceedings (including any inquiries or investigations by any court or governmental agency
or body, domestic or foreign) against or affecting the Company, any of its subsidiaries or any of their respective properties that,
if determined adversely to the Company or any of its subsidiaries, would individually or in the aggregate have a Material Adverse
Effect, or would materially and adversely affect the ability of the Company to perform its obligations under this Agreement or
the Indenture, or which are otherwise material in the context of the sale of the Offered Securities; and no such actions, suits
or proceedings (including any inquiries or investigations by any court or governmental agency or body, domestic or foreign) are,
to the Company&rsquo;s knowledge, threatened or contemplated.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in"><FONT STYLE="font-family: Times New Roman, Times, Serif">(aa)
</FONT><I>Financial Statements</I>. The financial statements included in the Registration Statement, the General Disclosure Package
and the Final Prospectus present fairly the financial position of the Company and its consolidated subsidiaries as of the dates
shown and their results of operations and cash flows for the periods shown, and such financial statements have been prepared in
conformity with the generally accepted accounting principles in the United States applied on a consistent basis; and the schedules
included in the Registration Statement present fairly the information required to be stated therein. The interactive data in extensible
Business Reporting Language included or incorporated by reference in the Registration Statement , the General Disclosure Package
and the Final Prospectus fairly presents the information called for in all material respects and has been prepared in all material
respects in accordance with the Commission&rsquo;s rules and guidelines applicable thereto.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in"></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in"><FONT STYLE="font-family: Times New Roman, Times, Serif">(bb)
</FONT> <I>No Material Adverse Change in Business</I>. Except as disclosed in the General Disclosure Package, since the end of
the period covered by the latest audited financial statements included in the General Disclosure Package (i) there has been no
change, nor any development or event involving a prospective change, in the condition (financial or otherwise), results of operations,
business, properties or prospects of the Company and its subsidiaries, taken as a whole that is material and adverse, (ii) there
has been no dividend or distribution of any kind declared, paid or made by the Company on any class of its capital stock (other
than regular quarterly cash dividends in respect of the Company&rsquo;s common stock and declared and paid by the Company in the
ordinary course of business) and (iii) there has been no material adverse change in the capital stock, short-term indebtedness,
long-term indebtedness, net current assets or net assets of the Company and its subsidiaries.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in"><FONT STYLE="font-family: Times New Roman, Times, Serif">(cc)
</FONT><I>Investment Company Act</I>. The Company is not and, after giving effect to the offering and sale of the Offered Securities
and the application of the proceeds thereof as described in the Registration Statement, the General Disclosure Package and the
Final Prospectus, will not be an &ldquo;investment company&rdquo; as defined in the Investment Company Act of 1940, as amended.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in"><FONT STYLE="font-family: Times New Roman, Times, Serif">(dd)
</FONT><I>Ratings</I>. No &ldquo;nationally recognized statistical rating organization&rdquo; as such term is defined for purposes
of Section 3(a)(62) of the Exchange Act (i) has imposed (or has informed the Company that it is considering imposing) any condition
(financial or otherwise) on the Company&rsquo;s retaining any rating assigned to the Company or any securities of the Company or
(ii) has indicated to the Company that it is considering any of the actions described in Section 7(c)(ii) hereof, except as has
been publicly disclosed by the applicable nationally recognized statistical rating organization.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in"><FONT STYLE="font-family: Times New Roman, Times, Serif">(ee)
</FONT><I>Foreign Corrupt Practices Act.</I> Within the last five years, none of the Company, any of its subsidiaries or, to the
Company&rsquo;s knowledge, any director, officer, agent, employee, controlled affiliate or other controlled person acting on behalf
of the Company or any of its subsidiaries has taken any action, directly or indirectly, that would reasonably be expected to result
in a violation by such persons of the Foreign Corrupt Practices Act of 1977, as amended, and the rules and regulations thereunder
(the &ldquo;<B>FCPA</B>&rdquo;), including, without limitation, making use of the mails or any means or instrumentality of interstate
commerce corruptly in furtherance of an offer, payment, promise to pay or authorization of the payment of any money, or other property,
gift, promise to give, or authorization of the giving of anything of value to any &ldquo;foreign official&rdquo; (as such term
is defined in the FCPA) or any foreign political party or official thereof or any candidate for foreign political office, in contravention
of the FCPA and the Company and its subsidiaries conduct their businesses in material compliance with the FCPA.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in"><FONT STYLE="font-family: Times New Roman, Times, Serif">(ff)
</FONT><I>Money Laundering Laws.</I> The operations of the Company and its subsidiaries comply in all material respects with applicable
financial recordkeeping and reporting requirements of the Currency and Foreign Transactions Reporting Act of 1970, as amended,
the applicable money laundering statutes of all jurisdictions in which the Company and its subsidiaries operate, the rules and
regulations thereunder and any related or similar rules, regulations or guidelines, issued, administered or enforced by any Governmental
Entity applicable to the Company and its subsidiaries (collectively, the &ldquo;<B>Money Laundering Laws</B>&rdquo;); and no action,
suit or proceeding by or before any Governmental Entity with respect to the Money Laundering Laws is pending or, to the knowledge
of the Company, threatened against the Company or any of its subsidiaries.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in"><FONT STYLE="font-family: Times New Roman, Times, Serif">(gg)
</FONT><I>OFAC</I>. None of the Company, any of its subsidiaries or, to the knowledge of the Company, any director, officer, agent,
employee, controlled affiliate or other controlled representative of the Company or any of its subsidiaries is an individual or
entity currently the subject or target of any international economic sanctions administered or enforced by the United States Government,
including, without limitation, the U.S. Department of the Treasury&rsquo;s Office of Foreign Assets Control, the United Nations
Security Council, the European Union, Her Majesty&rsquo;s Treasury or other relevant sanctions authority (collectively, &ldquo;<B>Sanctions</B>&rdquo;).
The Company will not use the proceeds of the sale of the Offered Securities in violation of Sanctions.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in"></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in"><FONT STYLE="font-family: Times New Roman, Times, Serif">(hh)
</FONT> <I>Cybersecurity</I>. Except as disclosed in the Registration Statement, the General Disclosure Package and the Final Prospectus,
or as would not, individually or in the aggregate, result in a Material Adverse Effect: (i) to the Company&rsquo;s knowledge there
has been no security breach or other compromise of or relating to any of the Company&rsquo;s or its subsidiaries&rsquo; information
technology and computer systems, networks, hardware, software, data (including the data of their respective customers, employees,
suppliers, vendors and any third party data maintained by or on behalf of them), equipment or technology (collectively, &ldquo;<B>IT
Systems and Data</B>&rdquo;); (ii) the Company and its subsidiaries have not been notified of, and have no knowledge of any event
or condition that would reasonably be expected to result in, any security breach or other compromise to their IT Systems and Data;
and (iii) the Company and its subsidiaries are presently in compliance with all applicable laws or statutes and all judgments,
orders, rules and regulations of any court or arbitrator or governmental or regulatory authority, internal policies and contractual
obligations relating to the privacy and security of IT Systems and Data and to the protection of such IT Systems and Data from
unauthorized use, access, misappropriation or modification. Except as disclosed in the Registration Statement, the General Disclosure
Package and the Final Prospectus, the Company and its subsidiaries have implemented backup and disaster recovery technology consistent
with industry standards and practices.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in"><FONT STYLE="font-family: Times New Roman, Times, Serif">3.
</FONT><I>Purchase, Sale and Delivery of Offered Securities</I>. On the basis of the representations, warranties and agreements
and subject to the terms and conditions set forth herein, the Company agrees to sell to the several Underwriters, and each of the
Underwriters agrees, severally and not jointly, to purchase from the Company the respective principal amount of Offered Securities
set forth opposite such Underwriter&rsquo;s name in Schedule A hereto at a purchase price of 99.008% of the principal amount of
the Offered Securities, plus accrued interest, if any, from June 17, 2020, to the Closing Date (as hereinafter defined).</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 36.35pt">Payment of the purchase price for, and
delivery of, the Offered Securities shall be made at the offices of Davis Polk &amp; Wardwell LLP, 450 Lexington Avenue, New York,
New York 10017, or at such other place as shall be agreed upon by the Representatives and the Company, at 9:00&nbsp;A.M. (New York
City time) on June 17, 2020, or such other time not later than five business days after such date as shall be agreed upon by the
Representatives and the Company (such time and date of payment and delivery being herein called the &ldquo;<B>Closing Date</B>&rdquo;).</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 36.35pt">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 36.35pt">Payment shall be made by wire transfer
of immediately available funds to a bank account designated by the Company against delivery to the Representatives for the respective
accounts of the Underwriters of the Offered Securities to be purchased by them. It is understood that each Underwriter has authorized
the Representatives, for their account, to accept delivery of, receipt for, and make payment of the purchase price for, the Offered
Securities that it has agreed to purchase. The Representatives may (but shall not be obligated to) make payment of the purchase
price for the Offered Securities to be purchased by any Underwriter whose funds have not been received by the Closing Date, but
such payment shall not relieve such Underwriter from its obligations hereunder.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 36.35pt">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 36.35pt">Delivery of the Offered Securities, which
will be represented by one or more definitive global notes in book-entry form, shall be made through the facilities of the Depository
Trust Company unless the Representatives shall otherwise instruct. The Offered Securities to be so delivered will be in fully registered
form in such authorized denominations as established pursuant to the Indenture.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 36.35pt">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in"><FONT STYLE="font-family: Times New Roman, Times, Serif">4.
</FONT><I>Offering by Underwriters</I>. It is understood that the several Underwriters propose to offer the Offered Securities
for sale to the public as set forth in the Final Prospectus.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in"><FONT STYLE="font-family: Times New Roman, Times, Serif">5.
</FONT><I>Certain Agreements of the Company</I>. The Company agrees with the several Underwriters that:</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in"><FONT STYLE="font-family: Times New Roman, Times, Serif">(a) </FONT><I>Filing
of Prospectuses</I>. The Company has filed or will file each Statutory Prospectus (including the Final Prospectus) pursuant
to and in accordance with Rule 424(b)(2) (or, if applicable and consented to by the Representatives, subparagraph (5), such
consent not to be unreasonably withheld or delayed) not later than the second business day following the earlier of the date
it is first used or the execution and delivery of this Agreement. The Company has complied and will comply with Rule 433.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in"></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in"><FONT STYLE="font-family: Times New Roman, Times, Serif">(b)
</FONT><I>Filing of Amendments; Response to Commission Requests</I>. The Company will promptly advise the Representatives of any
proposal to amend or supplement the Registration Statement or any Statutory Prospectus at any time and will offer the Representatives
a reasonable opportunity to comment on any such amendment or supplement; and the Company will also advise the Representatives promptly
of (i) the filing of any such amendment or supplement, (ii) any request by the Commission or its staff for any amendment to the
Registration Statement, for any supplement to any Statutory Prospectus or for any additional information, (iii) the institution
by the Commission of any stop order proceedings in respect of the Registration Statement or the threatening of any proceeding for
that purpose, and (iv) the receipt by the Company of any notification with respect to the suspension of the qualification of the
Offered Securities in any jurisdiction or the institution or threatening of any proceedings for such purpose. The Company will
use its best efforts to prevent the issuance of any such stop order or the suspension of any such qualification and, if issued,
to obtain as soon as possible the withdrawal thereof.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in"><FONT STYLE="font-family: Times New Roman, Times, Serif">(c)
</FONT><I>Continued Compliance with Securities Laws</I>. If, at any time when a prospectus relating to the Offered Securities is
(or, but for the exemption in Rule 172, would be) required to be delivered under the Act by any Underwriter or dealer, any event
occurs as a result of which the Final Prospectus as then amended or supplemented would include an untrue statement of a material
fact or omit to state any material fact necessary to make the statements therein, in the light of the circumstances under which
they were made, not misleading, or if it is necessary at any time to amend the Registration Statement or supplement the Final Prospectus
to comply with the Act, the Company will promptly notify the Representatives of such event and will promptly prepare and file with
the Commission and furnish, at its own expense, to the Underwriters and the dealers and any other dealers upon request of the Representatives,
an amendment or supplement which will correct such statement or omission or an amendment which will effect such compliance. Neither
the Representatives&rsquo; consent to, nor the Underwriters&rsquo; delivery of, any such amendment or supplement shall constitute
a waiver of any of the conditions set forth in Section 7 hereof.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in"><FONT STYLE="font-family: Times New Roman, Times, Serif">(d)
</FONT><I>Rule 158</I>. As soon as practicable, but not later than 16 months, after the date of this Agreement, the Company will
make generally available to its securityholders an earnings statement covering a period of at least 12 months beginning after the
date of this Agreement and satisfying the provisions of Section 11(a) of the Act and Rule 158.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in"><FONT STYLE="font-family: Times New Roman, Times, Serif">(e)
</FONT><I>Furnishing of Prospectuses</I>. The Company will furnish to the Representatives copies of the Registration Statement,
including all exhibits, any Statutory Prospectus, the Final Prospectus and all amendments and supplements to such documents, in
each case as soon as available and in such quantities as the Representatives reasonably request. The Company will pay the expenses
of printing and distributing to the Underwriters all such documents.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in"><FONT STYLE="font-family: Times New Roman, Times, Serif">(f)
</FONT><I>Blue Sky Qualifications</I>. The Company will arrange for the qualification of the Offered Securities for sale and the
determination of their eligibility for investment under the laws of such jurisdictions as the Representatives reasonably designate
and will continue such qualifications in effect so long as required for the distribution; <I>provided</I> that, in connection therewith,
the Company shall not be required to qualify as a foreign corporation or to take any action that would subject it to a general
consent to service of process in any such jurisdiction.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in"><FONT STYLE="font-family: Times New Roman, Times, Serif">(g) </FONT><I>Reporting
Requirements</I>. During the period of five years hereafter, if any Offered Securities remain outstanding, the Company will
furnish to the Representatives and, upon request, to each of the other Underwriters, as soon as practicable after the end of
each fiscal year, a copy of its annual report to stockholders for such year; and the Company will furnish to the
Representatives (i) as soon as available, a copy of each report and any definitive proxy statement of the Company filed with
the Commission under the Exchange Act or mailed to stockholders, and (ii) from time to time, such other information
concerning the Company as the Representatives may reasonably request. However, so long as the Company is subject to the
reporting requirements of either Section 13 or Section 15(d) of the Exchange Act and is timely filing reports with the
Commission on its Electronic Data Gathering, Analysis and Retrieval system (&ldquo;<B>EDGAR</B>&rdquo;), it is not required
to furnish such reports or statements to the Representatives or the Underwriters.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in"></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in"><FONT STYLE="font-family: Times New Roman, Times, Serif">(h)
</FONT><I>Payment of Expenses</I>. The Company will pay all expenses incident to the performance of its obligations under this
Agreement, including but not limited to any filing fees and other expenses (including fees and disbursements of counsel to the
Underwriters) incurred in connection with qualification of the Offered Securities for sale under the laws of such jurisdictions
as the Representatives reasonably designate and the preparation and printing of memoranda relating thereto, any fees charged by
investment rating agencies for the rating of the Offered Securities, costs and expenses relating to investor presentations or any
&ldquo;road show&rdquo; in connection with the offering and sale of the Offered Securities including, without limitation, any travel
expenses of the Company&rsquo;s officers and employees and any other expenses of the Company including the chartering of airplanes
(but excluding any separately-incurred travel expenses of employees and representatives of the Representatives and the Underwriters),
fees and expenses incident to listing any of the Offered Securities on the New York Stock Exchange, American Stock Exchange, Nasdaq
Stock Market and other national and foreign exchanges, fees and expenses in connection with the registration of the Offered Securities
under the Exchange Act, and expenses incurred in distributing preliminary prospectuses and the Final Prospectus (including any
amendments and supplements thereto) to the Underwriters and for expenses incurred for preparing, printing and distributing any
Issuer Free Writing Prospectuses to investors or prospective investors.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in"><FONT STYLE="font-family: Times New Roman, Times, Serif">(i)
</FONT><I>Use of Proceeds</I>. The Company will use the net proceeds received in connection with this offering in the manner described
in the &ldquo;Use of Proceeds&rdquo; section of the Registration Statement, the General Disclosure Package and the Final Prospectus
and, except as disclosed in the Registration Statement, General Disclosure Package and the Final Prospectus, the Company does not
intend to use any of the proceeds from the sale of the Offered Securities hereunder to repay any outstanding debt owed to any affiliate
of any Underwriter.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in"><FONT STYLE="font-family: Times New Roman, Times, Serif">(j)
</FONT><I>Absence of Manipulation</I>. The Company will not take, directly or indirectly, any action designed to or that would
constitute or that might reasonably be expected to cause or result in stabilization or manipulation of the price of any securities
of the Company to facilitate the sale or resale of the Offered Securities.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in"><FONT STYLE="font-family: Times New Roman, Times, Serif">(k)
</FONT><I>Restriction on Sale of Securities</I>. The Company will not offer, sell, contract to sell, pledge or otherwise dispose
of, directly or indirectly, or file with the Commission a registration statement under the Act relating to United States dollar-denominated
debt securities issued or guaranteed by the Company and having a maturity of more than one year from the date of issue, or publicly
disclose the intention to make any such offer, sale, pledge, disposition or filing, without the prior written consent of Wells
Fargo Securities, LLC, J.P. Morgan Securities LLC and RBC Capital Markets, LLC for a period beginning on the date hereof and ending
on the Closing Date (the &ldquo;<B>Lock-Up Period</B>&rdquo;).</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in"><FONT STYLE="font-family: Times New Roman, Times, Serif">6.
</FONT><I>Free Writing Prospectuses</I>. (a) Issuer Free Writing Prospectuses. The Company represents and agrees that, unless it
obtains the prior consent of the Representatives, and each Underwriter represents and agrees that, unless it obtains the prior
consent of the Company and the Representatives, it has not made and will not make any offer relating to the Offered Securities
that would constitute an Issuer Free Writing Prospectus, or that would otherwise constitute a &ldquo;free writing prospectus&rdquo;,
as defined in Rule 405, required to be filed with the Commission. Any such free writing prospectus consented to by the Company
and the Representatives is hereinafter referred to as a &ldquo;<B>Permitted Free Writing Prospectus</B>&rdquo;. The Company represents
that it has treated and agrees that it will treat each Permitted Free Writing Prospectus as an &ldquo;issuer free writing prospectus&rdquo;,
as defined in Rule 433, and has complied and will comply with the requirements of Rules 164 and 433 applicable to any Permitted
Free Writing Prospectus, including timely Commission filing where required, legending and record keeping.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in"></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in"><FONT STYLE="font-family: Times New Roman, Times, Serif">(b)
</FONT> <I>Term Sheet</I>. The Company will prepare a final term sheet relating to the Offered Securities, containing only information
that describes the final terms of the Offered Securities and otherwise in a form consented to by the Representatives, and will
file such final term sheet within the period required by Rule 433(d)(5)(ii) following the date such final terms have been established
for the offering of the Offered Securities. Any such final term sheet is an Issuer Free Writing Prospectus and a Permitted Free
Writing Prospectus for purposes of this Agreement. The Company also consents to the use by any Underwriter of a free writing prospectus
that contains only (i) (A) information describing the preliminary terms of the Offered Securities or their offering or (B) information
that describes the final terms of the Offered Securities or their offering and that is included in the final term sheet of the
Company contemplated in the first sentence of this subsection or (ii) other information that is not &ldquo;issuer information&rdquo;,
as defined in Rule 433, it being understood that any such free writing prospectus referred to in clause (i) or (ii) above shall
not be an Issuer Free Writing Prospectus for purposes of this Agreement.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in"><FONT STYLE="font-family: Times New Roman, Times, Serif">7.
</FONT><I>Conditions of the Obligations of the Underwriters</I>. The obligations of the several Underwriters to purchase and pay
for the Offered Securities on the Closing Date will be subject to the accuracy of the representations and warranties of the Company
herein (as though made on the Closing Date), to the accuracy of the statements of Company officers made pursuant to the provisions
hereof, to the performance by the Company of its obligations hereunder and to the following additional conditions precedent:</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in"><FONT STYLE="font-family: Times New Roman, Times, Serif">(a)
</FONT><I>Accountants&rsquo; Comfort Letters</I>. The Representatives shall have received letters, dated, respectively, the date
hereof and the Closing Date, of Deloitte &amp; Touche LLP, confirming that it is a registered public accounting firm and independent
public accountants within the meaning of the Securities Laws and substantially in the form of Schedule C hereto (except that, in
any letter dated the Closing Date, the specified date referred to in Schedule C hereto shall be a date no more than three days
prior to the Closing Date).</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in"><FONT STYLE="font-family: Times New Roman, Times, Serif">(b)
</FONT><I>Filing of Prospectus</I>. The Final Prospectus shall have been filed with the Commission in accordance with the Rules
and Regulations and Section 5(a) hereof. No stop order suspending the effectiveness of the Registration Statement or of any part
thereof shall have been issued and no proceedings for that purpose shall have been instituted or, to the knowledge of the Company
or any Underwriter, shall be contemplated by the Commission.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in"><FONT STYLE="font-family: Times New Roman, Times, Serif">(c) </FONT><I>No
Material Adverse Change</I>. Subsequent to the execution and delivery of this Agreement, there shall not have occurred (i)
any change, or any development or event involving a prospective change, in the condition (financial or otherwise), results of
operations, business, properties or prospects of the Company and its subsidiaries taken as a whole which, in the judgment of
the Representatives, is material and adverse and makes it impractical or inadvisable to market the Offered Securities; (ii)
any downgrading in the rating of any debt securities of the Company by any &ldquo;nationally recognized statistical rating
organization&rdquo; (as defined for purposes of Rule 3(a)(62)), or any public announcement that any such organization has
under surveillance or review its rating of any debt securities of the Company (other than an announcement with positive
implications of a possible upgrading, and no implication of a possible downgrading, of such rating); (iii) any change in U.S.
or international financial, political or economic conditions or currency exchange rates or exchange controls the effect of
which is such as to make it, in the judgment of the Representatives, impractical to market or to enforce contracts for the
sale of the Offered Securities, whether in the primary market or in respect of dealings in the secondary market; (iv) any
suspension or material limitation of trading in securities generally on the New York Stock Exchange, or any setting of
minimum or maximum prices for trading on such exchange; (v) any suspension of trading of any securities of the Company on any
exchange or in the over-the-counter market; (vi) any banking moratorium declared by any U.S. Federal or New York authorities;
(vii) any major disruption of settlements of securities, payment or clearance services in the United States or any other
country where such securities are listed, or (viii) any attack on, outbreak or escalation of hostilities or act of terrorism
involving the United States, any declaration of war by Congress or any other national or international calamity or emergency
if, in the judgment of the Representatives, the effect of any such attack, outbreak, escalation, act, declaration, calamity
or emergency is such as to make it impractical or inadvisable to market the Offered Securities or to enforce contracts for
the sale of the Offered Securities.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in"></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in"><FONT STYLE="font-family: Times New Roman, Times, Serif">(d)
</FONT><I>Opinion of Counsel for Company</I>. The Representatives shall have received an opinion, dated the Closing Date, of Faegre
Drinker Biddle &amp; Reath LLP, counsel for the Company, in form and substance reasonably satisfactory to the Representatives,
to the effect set forth in Exhibit A hereto.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in"><FONT STYLE="font-family: Times New Roman, Times, Serif">(e)
</FONT><I>Opinion of General Counsel to the Company</I>. The Representatives shall have received an opinion, dated the Closing
Date, of Brian G. Iverson, Esq., General Counsel to the Company, in form and substance reasonably satisfactory to the Representatives,
to the effect set forth in Exhibit B hereto.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in"><FONT STYLE="font-family: Times New Roman, Times, Serif">(f)
</FONT><I>Opinion of Counsel for Underwriters</I>. The Representatives shall have received from Davis Polk &amp; Wardwell LLP,
counsel for the Underwriters, such opinion or opinions, dated the Closing Date, with respect to such matters as the Representatives
may require, and the Company shall have furnished to such counsel such documents as they request for the purpose of enabling them
to pass upon such matters. In rendering such opinion, Davis Polk &amp; Wardwell LLP may rely as to the incorporation of the Company
and all other matters governed by South Dakota law upon the opinion of Brian G. Iverson, Esq., General Counsel to the Company,
referred to above.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in"><FONT STYLE="font-family: Times New Roman, Times, Serif">(g)
</FONT><I>Officers&rsquo; Certificate</I>. The Representatives shall have received a certificate, dated the Closing Date, of an
executive officer of the Company and a principal financial or accounting officer of the Company in which such officers shall state
that: the representations and warranties of the Company in this Agreement are true and correct; the Company has complied with all
agreements and satisfied all conditions on its part to be performed or satisfied hereunder at or prior to the Closing Date; no
stop order suspending the effectiveness of the Registration Statement has been issued and no proceedings for that purpose have
been instituted or, to the best of their knowledge and after reasonable investigation, are contemplated by the Commission; and,
subsequent to the date of the most recent financial statements in the General Disclosure Package, there has been no material adverse
change, nor any development or event involving a prospective material adverse change, in the condition (financial or otherwise),
results of operations, business, properties or prospects of the Company and its subsidiaries taken as a whole except as set forth
in or contemplated by the General Disclosure Package or as described in such certificate.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">The Company will furnish the Representatives with such conformed
copies of such opinions, certificates, letters and documents as the Representatives reasonably request. The Representatives may
in their sole discretion waive on behalf of the Underwriters compliance with any conditions to the obligations of the Underwriters
hereunder.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in"><FONT STYLE="font-family: Times New Roman, Times, Serif">8.
</FONT><I>Indemnification and Contribution</I>. (a) Indemnification by the Company. The Company will indemnify and hold harmless
each Underwriter, its partners, members, directors, officers, employees, agents, affiliates and each person, if any, who controls
such Underwriter within the meaning of Section 15 of the Act or Section 20 of the Exchange Act (each, an &ldquo;<B>Indemnified
Party</B>&rdquo;), against any and all losses, claims, damages or liabilities, joint or several, to which such Indemnified Party
may become subject, under the Act, the Exchange Act, other Federal or state statutory law or regulation or otherwise, insofar as
such losses, claims, damages or liabilities (or actions in respect thereof) arise out of or are based upon any untrue statement
or alleged untrue statement of any material fact contained in any part of the Registration Statement at any time, any Statutory
Prospectus as of any time, the Final Prospectus or any Issuer Free Writing Prospectus, or arise out of or are based upon the omission
or alleged omission of a material fact required to be stated therein or necessary to make the statements therein not misleading,
and will reimburse each Indemnified Party for any legal or other expenses reasonably incurred by such Indemnified Party in connection
with investigating or defending against any loss, claim, damage, liability, action, litigation, investigation or proceeding whatsoever
(whether or not such Indemnified Party is a party thereto), whether threatened or commenced, and in connection with the enforcement
of this provision with respect to any of the above as such expenses are incurred; provided, however, that the Company will not
be liable in any such case to the extent that any such loss, claim, damage or
liability arises out of or is based upon an untrue statement or alleged untrue statement in or omission or alleged omission from
any of such documents in reliance upon and in conformity with written information furnished to the Company by any Underwriter through
the Representatives specifically for use therein, it being understood and agreed that the only such information furnished by any
Underwriter consists of the information described as such in subsection (b) below.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in"></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in"><FONT STYLE="font-family: Times New Roman, Times, Serif">(b)
</FONT><I>Indemnification by the Underwriters</I>. Each Underwriter will severally and not jointly indemnify and hold harmless
the Company, each of its directors and each of its officers who signs a Registration Statement and each person, if any, who controls
the Company within the meaning of Section 15 of the Act or Section 20 of the Exchange Act (each, an &ldquo;<B>Underwriter Indemnified
Party</B>&rdquo;), against any losses, claims, damages or liabilities to which such Underwriter Indemnified Party may become subject,
under the Act, the Exchange Act, other Federal or state statutory law or regulation or otherwise, insofar as such losses, claims,
damages or liabilities (or actions in respect thereof) arise out of or are based upon any untrue statement or alleged untrue statement
of any material fact contained in any part of the Registration Statement at any time, any Statutory Prospectus as of any time,
the Final Prospectus or any Issuer Free Writing Prospectus, or arise out of or are based upon the omission or the alleged omission
of a material fact required to be stated therein or necessary to make the statements therein not misleading, in each case to the
extent, but only to the extent, that such untrue statement or alleged untrue statement or omission or alleged omission was made
in reliance upon and in conformity with written information furnished to the Company by such Underwriter through the Representatives
specifically for use therein, and will reimburse any legal or other expenses reasonably incurred by such Underwriter Indemnified
Party in connection with investigating or defending against any such loss, claim, damage, liability, action, litigation, investigation
or proceeding whatsoever (whether or not such Underwriter Indemnified Party is a party thereto), whether threatened or commenced,
based upon any such untrue statement or omission, or any such alleged untrue statement or omission as such expenses are incurred,
it being understood and agreed that the only such information furnished by any Underwriter consists of the following information
in the Final Prospectus furnished on behalf of each Underwriter: the concession and discount figures appearing in the third paragraph
under the caption &ldquo;Underwriting (Conflicts of Interest)&rdquo; and the information contained in the sixth through eleventh
paragraphs under the caption &ldquo;Underwriting (Conflicts of Interest)&rdquo;) (pertaining to the underwriters&rsquo; intention
to make market in the Notes, stabilizing transactions, over-allotment transactions, syndicate covering transactions and penalty
bids and the allocation of Internet distributions).</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in"><FONT STYLE="font-family: Times New Roman, Times, Serif">(c) </FONT><I>Actions
against Parties; Notification</I>. Promptly after receipt by an indemnified party under this Section of notice of the
commencement of any action, such indemnified party will, if a claim in respect thereof is to be made against the indemnifying
party under subsection (a) or (b) above, notify the indemnifying party of the commencement thereof; but the failure to notify
the indemnifying party shall not relieve it from any liability that it may have under subsection (a) or (b) above except to
the extent that it has been materially prejudiced (through the forfeiture of substantive rights or defenses) by such failure;
and provided further that the failure to notify the indemnifying party shall not relieve it from any liability that it may
have to an indemnified party otherwise than under subsection (a) or (b) above. In case any such action is brought against any
indemnified party and it notifies the indemnifying party of the commencement thereof, the indemnifying party will be entitled
to participate therein and, to the extent that it may wish, jointly with any other indemnifying party similarly notified, to
assume the defense thereof, with counsel satisfactory to such indemnified party (who shall not, except with the consent of
the indemnified party, be counsel to the indemnifying party), and after notice from the indemnifying party to such
indemnified party of its election so to assume the defense thereof, the indemnifying party will not be liable to such
indemnified party under this Section for any legal or other expenses subsequently incurred by such indemnified party in
connection with the defense thereof other than reasonable costs of investigation. No indemnifying party shall, without the
prior written consent of the indemnified party, effect any settlement of any pending or threatened action in respect of which
any indemnified party is or could have been a party and indemnity could have been sought hereunder by such indemnified party
unless such settlement (i) includes an unconditional release of such indemnified party from all liability on any claims that
are the subject matter of such action and (ii) does not include a statement as to, or an admission of, fault, culpability or
a failure to act by or on behalf of an indemnified party.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in"></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in"><FONT STYLE="font-family: Times New Roman, Times, Serif">(d)
</FONT><I>Contribution</I>. If the indemnification provided for in this Section is unavailable or insufficient to hold harmless
an indemnified party under subsection (a) or (b) above, then each indemnifying party shall contribute to the amount paid or payable
by such indemnified party as a result of the losses, claims, damages or liabilities referred to in subsection (a) or (b) above
(i) in such proportion as is appropriate to reflect the relative benefits received by the Company on the one hand and the Underwriters
on the other from the offering of the Offered Securities or (ii) if the allocation provided by clause (i) above is not permitted
by applicable law, in such proportion as is appropriate to reflect not only the relative benefits referred to in clause (i) above
but also the relative fault of the Company on the one hand and the Underwriters on the other in connection with the statements
or omissions which resulted in such losses, claims, damages or liabilities as well as any other relevant equitable considerations.
The relative benefits received by the Company on the one hand and the Underwriters on the other shall be deemed to be in the same
proportion as the total net proceeds from the offering (before deducting expenses) received by the Company bear to the total underwriting
discounts and commissions received by the Underwriters. The relative fault shall be determined by reference to, among other things,
whether the untrue or alleged untrue statement of a material fact or the omission or alleged omission to state a material fact
relates to information supplied by the Company or the Underwriters and the parties&rsquo; relative intent, knowledge, access to
information and opportunity to correct or prevent such untrue statement or omission. The amount paid by an indemnified party as
a result of the losses, claims, damages or liabilities referred to in the first sentence of this subsection (d) shall be deemed
to include any legal or other expenses reasonably incurred by such indemnified party in connection with investigating or defending
any action or claim which is the subject of this subsection (d). Notwithstanding the provisions of this subsection (d), no Underwriter
shall be required to contribute any amount in excess of the amount by which the total price at which the Offered Securities underwritten
by it and distributed to the public were offered to the public exceeds the amount of any damages which such Underwriter has otherwise
been required to pay by reason of such untrue or alleged untrue statement or omission or alleged omission. No person guilty of
fraudulent misrepresentation (within the meaning of Section 11(f) of the Act) shall be entitled to contribution from any person
who was not guilty of such fraudulent misrepresentation. The Underwriters&rsquo; obligations in this subsection (d) to contribute
are several in proportion to their respective underwriting obligations and not joint. The Company and the Underwriters agree that
it would not be just and equitable if contribution pursuant to this Section 8(d) were determined by pro rata allocation (even if
the Underwriters were treated as one entity for such purpose) or by any other method of allocation which does not take account
of the equitable considerations referred to in this Section 8(d).</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in"><FONT STYLE="font-family: Times New Roman, Times, Serif">9. </FONT><I>Default
of Underwriters</I>. If any Underwriter or Underwriters default in their obligations to purchase Offered Securities hereunder
on the Closing Date and the aggregate principal amount of Offered Securities that such defaulting Underwriter or Underwriters
agreed but failed to purchase does not exceed 10% of the total principal amount of Offered Securities that the Underwriters
are obligated to purchase on the Closing Date, the Representatives may make arrangements satisfactory to the Company for the
purchase of such Offered Securities by other persons, including any of the Underwriters, but if no such arrangements are made
by the Closing Date, the non-defaulting Underwriters shall be obligated severally, in proportion to their respective
commitments hereunder, to purchase the Offered Securities that such defaulting Underwriters agreed but failed to purchase on
the Closing Date. If any Underwriter or Underwriters so default and the aggregate principal amount of Offered Securities with
respect to which such default or defaults occur exceeds 10% of the total principal amount of Offered Securities that the
Underwriters are obligated to purchase on the Closing Date and arrangements satisfactory to the Representatives and the
Company for the purchase of such Offered Securities by other persons are not made within 36 hours after such default, this
Agreement will terminate without liability on the part of any non-defaulting Underwriter or the Company, except as provided
in Section 10. As used in this Agreement, the term &ldquo;Underwriter&rdquo; includes any person substituted for an
Underwriter under this Section. Nothing herein will relieve a defaulting Underwriter from liability for its default.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in"><FONT STYLE="font-family: Times New Roman, Times, Serif">10.
</FONT><I>Survival of Certain Representations and Obligations</I>. The respective indemnities, agreements, representations, warranties
and other statements of the Company or its officers and of the several Underwriters set forth in or made pursuant to this Agreement
will remain in full force and effect, regardless of any investigation, or statement as to the results thereof, made by or on behalf
of any Underwriter, the Company or any of their respective representatives, officers or directors or any controlling person, and
will survive delivery of and payment for the Offered Securities. If the purchase of the Offered Securities by the Underwriters
is not consummated for any reason other than solely because of the termination of this Agreement pursuant to Section 9 hereof or
the occurrence of any event specified in clause (iii), (iv), (vi), (vii) or (viii) of Section 7(d), the Company will reimburse
the Underwriters for all out-of-pocket expenses (including fees and disbursements of counsel) reasonably incurred by them in connection
with the offering of the Offered Securities, and the respective obligations of the Company and the Underwriters pursuant to Section
8 hereof shall remain in effect. In addition, if any Offered Securities have been purchased hereunder, the representations and
warranties in Section 2 and all obligations under Section 5 shall also remain in effect.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in"><FONT STYLE="font-family: Times New Roman, Times, Serif">11.
</FONT><I>Notices</I>. All communications hereunder will be in writing and, if sent to the Underwriters, will be mailed, delivered
or telegraphed and confirmed to the Representatives at Wells Fargo Securities, LLC, 550 South Tryon Street &ndash; 5th Floor, Charlotte,
North Carolina 28202, Attention: Transaction Management, Telephone: (704) 410-4792, Facsimile: (704) 410-0326; J.P. Morgan Securities
LLC, 383 Madison Avenue, New York, New York 10179, Attention: Investment Grade Syndicate Desk, Fax: (212) 834-6081; and RBC Capital
Markets, LLC, Brookfield Place, 200 Vesey Street, 8th Floor, New York, New York 10281, Attention: Transaction Management, facsimile:
(212) 428-6308 or, if sent to the Company, will be mailed, delivered or telegraphed and confirmed to it at 7001 Mount Rushmore
Road, Rapid City, South Dakota 57702, Attention: Brian G. Iverson, Esq., General Counsel; <I>provided</I>, <I>however</I>, that
any notice to an Underwriter pursuant to Section 8 will be mailed, delivered or telegraphed and confirmed to such Underwriter.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in"><FONT STYLE="font-family: Times New Roman, Times, Serif">12.
</FONT><I>Successors</I>. This Agreement will inure to the benefit of and be binding upon the parties hereto and their respective
successors and the officers and directors and controlling persons referred to in Section 8, and no other person will have any right
or obligation hereunder.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in"><FONT STYLE="font-family: Times New Roman, Times, Serif">13.
</FONT><I>Representation of Underwriters</I>. The Representatives will act for the several Underwriters in connection with this
financing, and any action under this Agreement taken by the Representatives will be binding upon all the Underwriters.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in"><FONT STYLE="font-family: Times New Roman, Times, Serif">14.
</FONT><I>Counterparts</I>. This Agreement may be executed in any number of counterparts, each of which shall be deemed to be an
original, but all such counterparts shall together constitute one and the same Agreement.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in"><FONT STYLE="font-family: Times New Roman, Times, Serif">15.
</FONT><I>Absence of Fiduciary Relationship</I>. The Company acknowledges and agrees that:</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in"><FONT STYLE="font-family: Times New Roman, Times, Serif">(a)
</FONT><I>No Other Relationship</I>. The Representatives have been retained solely to act as an underwriter in connection with
the sale of Offered Securities and that no fiduciary, advisory or agency relationship between the Company and the Representatives
has been created in respect of any of the transactions contemplated by this Agreement or the Final Prospectus, irrespective of
whether the Representatives have advised or is advising the Company on other matters;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in"><FONT STYLE="font-family: Times New Roman, Times, Serif">(b)
</FONT><I>Arms&rsquo; Length Negotiations</I>. The price of the Offered Securities set forth in this Agreement was established
by the Company following discussions and arms&rsquo;-length negotiations with the Representatives and the Company is capable of
evaluating and understanding and understands and accepts the terms, risks and conditions of the transactions contemplated by this
Agreement;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in"></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in"><FONT STYLE="font-family: Times New Roman, Times, Serif">(c)
</FONT> <I>Absence of Obligation to Disclose</I>. The Company has been advised that the Representatives and their respective affiliates
are engaged in a broad range of transactions which may involve interests that differ from those of the Company and that the Representatives
have no obligation to disclose such interests and transactions to the Company by virtue of any fiduciary, advisory or agency relationship;
and</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in"><FONT STYLE="font-family: Times New Roman, Times, Serif">(d)
</FONT><I>Waiver</I>. The Company waives, to the fullest extent permitted by law, any claims it may have against the Representatives
for breach of fiduciary duty or alleged breach of fiduciary duty and agrees that the Representatives shall have no liability (whether
direct or indirect) to the Company in respect of such a fiduciary duty claim or to any person asserting a fiduciary duty claim
on behalf of or in right of the Company, including stockholders, employees or creditors of the Company.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in"><FONT STYLE="font-family: Times New Roman, Times, Serif">16.
</FONT><I>Applicable Law</I>. This Agreement shall be governed by, and construed in accordance with, the laws of the State of New
York.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">The Company hereby submits to the non-exclusive
jurisdiction of the Federal and state courts in the Borough of Manhattan in The City of New York in any suit or proceeding arising
out of or relating to this Agreement or the transactions contemplated hereby. The Company irrevocably and unconditionally waives
any objection to the laying of venue of any suit or proceeding arising out of or relating to this Agreement or the transactions
contemplated hereby in Federal and state courts in the Borough of Manhattan in The City of New York and irrevocably and unconditionally
waives and agrees not to plead or claim in any such court that any such suit or proceeding in any such court has been brought in
an inconvenient forum.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in"><FONT STYLE="font-family: Times New Roman, Times, Serif">17.
</FONT><I>Recognition of the U.S. Special Resolution Regimes</I></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in"><FONT STYLE="font-family: Times New Roman, Times, Serif">(a)
</FONT>In the event that any Underwriter that is a Covered Entity becomes subject to a proceeding under a U.S. Special Resolution
Regime, the transfer from such Underwriter of this Agreement, and any interest and obligation in or under this Agreement, will
be effective to the same extent as the transfer would be effective under the U.S. Special Resolution Regime if this Agreement,
and any such interest and obligation, were governed by the laws of the United States or a state of the United States.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in"><FONT STYLE="font-family: Times New Roman, Times, Serif">(b)
</FONT>In the event that any Underwriter that is a Covered Entity or a BHC Act Affiliate of such Underwriter becomes subject to
a proceeding under a U.S. Special Resolution Regime, Default Rights under this Agreement that may be exercised against such Underwriter
are permitted to be exercised to no greater extent than such Default Rights could be exercised under the U.S. Special Resolution
Regime if this Agreement were governed by the laws of the United States or a state of the United States.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in"><FONT STYLE="font-family: Times New Roman, Times, Serif">(c)
</FONT>For purposes of this Section 17:</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1in; text-align: justify; text-indent: 0.5in"><FONT STYLE="font-family: Times New Roman, Times, Serif">(i)
</FONT> &ldquo;<I>BHC Act Affiliate</I>&rdquo; has the meaning assigned to the term &ldquo;affiliate&rdquo; in, and shall be interpreted
in accordance with, 12 U.S.C. &sect; 1841(k).</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1in; text-align: justify; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1in; text-align: justify; text-indent: 0.5in"><FONT STYLE="font-family: Times New Roman, Times, Serif">(ii)
</FONT>&ldquo;<I>Covered Entity</I>&rdquo; means any of the following: (i) a &ldquo;covered entity&rdquo; as that term is defined
in, and interpreted in accordance with, 12 C.F.R. &sect;&nbsp;252.82(b); (ii) &ldquo;covered bank&rdquo; as that term is defined
in, and interpreted in accordance with, 12 C.F.R. &sect;&nbsp;47.3(b); or (iii) a &ldquo;covered FSI&rdquo; as that term is defined
in, and interpreted in accordance with, 12 C.F.R. &sect;&nbsp;382.2(b).</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1in; text-align: justify; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1in; text-align: justify; text-indent: 0.5in"><FONT STYLE="font-family: Times New Roman, Times, Serif">(iii)
</FONT>&ldquo;<I>Default Right</I>&rdquo; has the meaning assigned to that term in, and shall be interpreted in accordance with,
12 C.F.R. &sect;&sect; 252.81, 47.2 or 382.1, as applicable.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1in; text-align: justify; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1in; text-align: justify; text-indent: 0.5in"><FONT STYLE="font-family: Times New Roman, Times, Serif">(iv) </FONT>&ldquo;<I>U.S.
Special Resolution Regime</I>&rdquo; means each of (i) the Federal Deposit Insurance Act and the regulations promulgated
thereunder and (ii) Title II of the Dodd-Frank Wall Street Reform and Consumer Protection Act and the regulations
promulgated thereunder.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1in; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1in; text-align: justify"></P>

<!-- Field: Page; Sequence: 18; Value: 15 -->
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    <!-- Field: /Page -->

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1in; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">If the foregoing is in accordance with the
Representatives&rsquo; understanding of our agreement, kindly sign and return to the Company one of the counterparts hereof, whereupon
it will become a binding agreement between the Company and the several Underwriters in accordance with its terms.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif; border-collapse: collapse">
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD COLSPAN="2">Very truly yours,</TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD COLSPAN="2">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD COLSPAN="2">BLACK HILLS CORPORATION</TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD COLSPAN="2">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="width: 50%">&nbsp;</TD>
    <TD STYLE="width: 3%">By:</TD>
    <TD STYLE="border-bottom: Black 1pt solid; width: 47%">/s/ Kimberly F. Nooney</TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>Name: Kimberly F. Nooney</TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>Title:&nbsp;&nbsp;Vice President &ndash; Corporate Controller &amp; Treasurer</TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"></P>

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    <DIV STYLE="page-break-before: always; margin-top: 6pt; margin-bottom: 12pt"><P STYLE="margin: 0pt">&nbsp;</P></DIV>
    <!-- Field: /Page -->

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">The foregoing Underwriting Agreement is
hereby confirmed and accepted as of the date first above written.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif; border-collapse: collapse">
<TR>
    <TD>&nbsp;</TD>
    <TD COLSPAN="2" STYLE="vertical-align: top"><FONT STYLE="text-transform: uppercase">WELLS FARGO SECURITIES, LLC</FONT></TD></TR>
<TR>
    <TD>&nbsp;</TD>
    <TD STYLE="vertical-align: top">&nbsp;</TD>
    <TD STYLE="vertical-align: top">&nbsp;</TD></TR>
<TR>
    <TD STYLE="width: 50%">&nbsp;</TD>
    <TD STYLE="vertical-align: top; width: 3%">By:</TD>
    <TD STYLE="border-bottom: Black 1pt solid; vertical-align: top; width: 47%">/s/ Carolyn Hurley</TD>
    </TR>
<TR>
    <TD>&nbsp;</TD>
    <TD STYLE="vertical-align: top">&nbsp;</TD>
    <TD STYLE="vertical-align: top">Name: Carolyn Hurley</TD>
    </TR>
<TR>
    <TD>&nbsp;</TD>
    <TD STYLE="vertical-align: top">&nbsp;</TD>
    <TD STYLE="vertical-align: top">Title:&nbsp;&nbsp;Director</TD>
    </TR>
<TR>
    <TD>&nbsp;</TD>
    <TD COLSPAN="2" STYLE="vertical-align: top">
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="text-transform: uppercase">&nbsp;</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.25in; text-indent: -0.25in"><FONT STYLE="text-transform: uppercase">J.P.
        MORGAN SECURITIES LLC</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.25in; text-indent: -0.25in">&nbsp;</P></TD></TR>
<TR>
    <TD>&nbsp;</TD>
    <TD STYLE="vertical-align: top">By:</TD>
    <TD STYLE="border-bottom: Black 1pt solid; vertical-align: top">/s/ Som Bhattacharyya</TD></TR>
<TR>
    <TD>&nbsp;</TD>
    <TD STYLE="vertical-align: top">&nbsp;</TD>
    <TD STYLE="vertical-align: top">Name: Som Bhattacharyya</TD></TR>
<TR>
    <TD>&nbsp;</TD>
    <TD STYLE="vertical-align: top">&nbsp;</TD>
    <TD STYLE="vertical-align: top">Title:&nbsp;&nbsp;Executive Director</TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif; border-collapse: collapse">
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD COLSPAN="2">
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.25in; text-indent: -0.25in"><FONT STYLE="text-transform: uppercase">RBC
        CAPITAL MARKETS, LLC</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.25in; text-indent: -0.25in">&nbsp;</P></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="width: 50%">&nbsp;</TD>
    <TD STYLE="width: 3%">By:</TD>
    <TD STYLE="border-bottom: Black 1pt solid; width: 47%">/s/ Scott G. Primrose</TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>Name: Scott G. Primrose</TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>Title:&nbsp;&nbsp;Authorized Signatory</TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 2.5in; text-indent: 0.5in"><FONT STYLE="text-transform: uppercase">&nbsp;</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Acting on behalf of themselves and as the Representatives of
the several Underwriters.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">SCHEDULE A</P>

<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" ALIGN="CENTER" STYLE="border-collapse: collapse; width: 90%; font: 10pt Times New Roman, Times, Serif">
<TR STYLE="vertical-align: bottom">
    <TD STYLE="border-bottom: Black 1pt solid; white-space: nowrap; font-size: 10pt; font-weight: bold">Underwriter</TD><TD STYLE="padding-bottom: 1pt; white-space: nowrap; font-size: 10pt; font-weight: bold">&nbsp;</TD>
    <TD COLSPAN="2" STYLE="border-bottom: Black 1pt solid; text-align: center; white-space: nowrap; font-size: 10pt; font-weight: bold">Principal Amount of Offered<BR>
 Securities</TD><TD STYLE="padding-bottom: 1pt; white-space: nowrap; font-size: 10pt; font-weight: bold">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: rgb(204,238,255)">
    <TD STYLE="width: 87%; font-size: 10pt; text-align: left">Wells Fargo Securities, LLC</TD><TD STYLE="width: 1%; font-size: 10pt; text-transform: uppercase">&nbsp;</TD>
    <TD STYLE="width: 1%; font-size: 10pt; text-transform: uppercase; text-align: left">$</TD><TD STYLE="width: 10%; font-size: 10pt; text-transform: uppercase; text-align: right">72,000,000</TD><TD STYLE="width: 1%; font-size: 10pt; text-transform: uppercase; text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: White">
    <TD STYLE="font-size: 10pt; text-align: left">J.P. Morgan Securities LLC</TD><TD STYLE="font-size: 10pt; text-transform: uppercase">&nbsp;</TD>
    <TD STYLE="font-size: 10pt; text-transform: uppercase; text-align: left">&nbsp;</TD><TD STYLE="font-size: 10pt; text-transform: uppercase; text-align: right">72,000,000</TD><TD STYLE="font-size: 10pt; text-transform: uppercase; text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: rgb(204,238,255)">
    <TD STYLE="font-size: 10pt; text-align: left">RBC Capital Markets, LLC</TD><TD STYLE="font-size: 10pt; text-transform: uppercase">&nbsp;</TD>
    <TD STYLE="font-size: 10pt; text-transform: uppercase; text-align: left">&nbsp;</TD><TD STYLE="font-size: 10pt; text-transform: uppercase; text-align: right">72,000,000</TD><TD STYLE="font-size: 10pt; text-transform: uppercase; text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: White">
    <TD STYLE="font-size: 10pt; text-align: left">Scotia Capital (USA) Inc.</TD><TD STYLE="font-size: 10pt; text-transform: uppercase">&nbsp;</TD>
    <TD STYLE="font-size: 10pt; text-transform: uppercase; text-align: left">&nbsp;</TD><TD STYLE="font-size: 10pt; text-transform: uppercase; text-align: right">40,000,000</TD><TD STYLE="font-size: 10pt; text-transform: uppercase; text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: rgb(204,238,255)">
    <TD STYLE="font-size: 10pt; text-align: left">Credit Suisse Securities (USA) LLC</TD><TD STYLE="font-size: 10pt">&nbsp;</TD>
    <TD STYLE="font-size: 10pt; text-align: left">&nbsp;</TD><TD STYLE="font-size: 10pt; text-align: right">24,000,000</TD><TD STYLE="font-size: 10pt; text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: White">
    <TD STYLE="font-size: 10pt; text-align: left">BofA Securities, Inc.</TD><TD STYLE="font-size: 10pt">&nbsp;</TD>
    <TD STYLE="font-size: 10pt; text-align: left">&nbsp;</TD><TD STYLE="font-size: 10pt; text-align: right">24,000,000</TD><TD STYLE="font-size: 10pt; text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: rgb(204,238,255)">
    <TD STYLE="font-size: 10pt; text-align: left">Morgan Stanley &amp; Co. LLC</TD><TD STYLE="font-size: 10pt">&nbsp;</TD>
    <TD STYLE="font-size: 10pt; text-align: left">&nbsp;</TD><TD STYLE="font-size: 10pt; text-align: right">24,000,000</TD><TD STYLE="font-size: 10pt; text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: White">
    <TD STYLE="font-size: 10pt; text-align: left">BMO Capital Markets Corp.</TD><TD STYLE="font-size: 10pt">&nbsp;</TD>
    <TD STYLE="font-size: 10pt; text-align: left">&nbsp;</TD><TD STYLE="font-size: 10pt; text-align: right">24,000,000</TD><TD STYLE="font-size: 10pt; text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: rgb(204,238,255)">
    <TD STYLE="font-size: 10pt; text-align: left">MUFG Securities Americas Inc.</TD><TD STYLE="font-size: 10pt">&nbsp;</TD>
    <TD STYLE="font-size: 10pt; text-align: left">&nbsp;</TD><TD STYLE="font-size: 10pt; text-align: right">24,000,000</TD><TD STYLE="font-size: 10pt; text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: White">
    <TD STYLE="padding-bottom: 2.5pt; font-size: 10pt; text-align: left">U.S. Bancorp Investments, Inc.</TD><TD STYLE="padding-bottom: 2.5pt; font-size: 10pt">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 2.5pt double; font-size: 10pt; text-align: left">&nbsp;</TD><TD STYLE="border-bottom: Black 2.5pt double; font-size: 10pt; text-align: right">24,000,000</TD><TD STYLE="padding-bottom: 2.5pt; font-size: 10pt; text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: rgb(204,238,255)">
    <TD STYLE="padding-bottom: 2.5pt; font-size: 10pt">Total</TD><TD STYLE="padding-bottom: 2.5pt; font-size: 10pt; text-transform: uppercase">&nbsp;</TD>
    <TD STYLE="border-bottom: Black 2.5pt double; font-size: 10pt; text-transform: uppercase; text-align: left">$</TD><TD STYLE="border-bottom: Black 2.5pt double; font-size: 10pt; text-transform: uppercase; text-align: right">400,000,000</TD><TD STYLE="padding-bottom: 2.5pt; font-size: 10pt; text-transform: uppercase; text-align: left">&nbsp;</TD></TR>
</TABLE>


<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

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    <DIV STYLE="page-break-before: always; margin-top: 6pt; margin-bottom: 12pt"><P STYLE="margin: 0pt">&nbsp;</P></DIV>
    <!-- Field: /Page -->

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"></P>

<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">SCHEDULE B</P>

<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0">1. General Use Issuer Free Writing Prospectuses (included
in the General Disclosure Package)</P>

<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&ldquo;General Use Issuer Free Writing Prospectus&rdquo;
includes each of the following documents:</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">1. Final term sheet, dated June 12, 2020,
a copy of which is attached hereto.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0">2. Other Information Included in the General Disclosure
Package</P>

<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">The following information is also included
in the General Disclosure Package:</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">None.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;</P>

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    <DIV STYLE="page-break-before: always; margin-top: 6pt; margin-bottom: 12pt"><P STYLE="margin: 0pt">&nbsp;</P></DIV>
    <!-- Field: /Page -->

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: right; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: right; text-indent: 0.5in">Filed Pursuant to Rule
433<BR>
Registration No. 333-<FONT STYLE="text-transform: uppercase">219705</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: right; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: right; text-indent: 0.5in">Pricing Term Sheet<BR>
June 12, 2020</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: right; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">Black Hills Corporation</P>

<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in"><I>This communication should be read in
conjunction with the preliminary prospectus supplement dated June 12, 2020 and the accompanying base prospectus. The information
in this communication supersedes the information in the preliminary prospectus supplement and the accompanying base prospectus
to the extent inconsistent with the information in the preliminary prospectus supplement and the accompanying base prospectus.
In all other respects, this communication is qualified in its entirety by reference to the preliminary prospectus supplement and
the accompanying base prospectus.</I></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center; text-indent: 0in"><B>$400,000,000 2.500%
Notes due 2030</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center; text-indent: 0in">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif; border-collapse: collapse">
<TR STYLE="vertical-align: top">
    <TD STYLE="width: 50%"><B>Issuer: </B></TD>
    <TD STYLE="width: 50%">Black Hills Corporation</TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD><B>Expected ratings (outlook)*: </B></TD>
    <TD>[Intentionally omitted]</TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD><B>Title of securities: </B></TD>
    <TD><FONT STYLE="text-transform: uppercase">2.500</FONT>% Notes due 2030</TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD><B>Ranking: </B></TD>
    <TD>Senior Unsecured</TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD><B>Aggregate principal amount offered: </B></TD>
    <TD>$<FONT STYLE="text-transform: uppercase">400,000,000</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD><B>Trade date: </B></TD>
    <TD>June 12, 2020</TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD><B>Settlement date (T+3)**: </B></TD>
    <TD>June 17, 2020</TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD><B>Interest payment dates: </B></TD>
    <TD>December 15 and June 15 of each year, commencing December 15, 2020</TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD><B>Stated maturity date: </B></TD>
    <TD>June 15, 2030</TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD><B>Initial price to public: </B></TD>
    <TD><FONT STYLE="text-transform: uppercase">99.658</FONT>% of principal amount</TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD><B>Annual interest rate: </B></TD>
    <TD><FONT STYLE="text-transform: uppercase">2.500</FONT>% per annum</TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD><B>Benchmark Treasury: </B></TD>
    <TD><FONT STYLE="text-transform: uppercase">0.625% </FONT>due May 1<FONT STYLE="text-transform: uppercase">5, 2030</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD><B>Benchmark Treasury Price / Yield: </B></TD>
    <TD><FONT STYLE="text-transform: uppercase">99-12+ / 0.689%</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD><B>Spread to Benchmark Treasury:</B></TD>
    <TD>+<FONT STYLE="text-transform: uppercase">185</FONT> bps</TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD><B>Yield to maturity: </B></TD>
    <TD><FONT STYLE="text-transform: uppercase">2.539</FONT>%</TD></TR>
</TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"></P>

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    <DIV STYLE="page-break-before: always; margin-top: 6pt; margin-bottom: 12pt"><P STYLE="margin: 0pt">&nbsp;</P></DIV>
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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif; border-collapse: collapse">
<TR STYLE="vertical-align: top">
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt"><B>Optional Redemption:</B></FONT></TD>
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;</FONT></TD>
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding-left: 0.125in; width: 50%"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt"><B>Make-whole
    call: </B></FONT></TD>
    <TD STYLE="width: 50%"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Callable at the greater of
    par and the make-whole (Treasury Rate plus <FONT STYLE="text-transform: uppercase">30 </FONT>bps) at any time before March
    15, 20<FONT STYLE="text-transform: uppercase">30</FONT>, as described under the heading &ldquo;Description of the Notes&mdash;Redemption&rdquo;
    in the preliminary prospectus supplement.</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;</FONT></TD>
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding-left: 0.125in"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt"><B>Par call: </B></FONT></TD>
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Callable at par at any time on or after March
    15, 20<FONT STYLE="text-transform: uppercase">30</FONT>, as described under the heading &ldquo;Description of the Notes&mdash;Redemption&rdquo;
    in the preliminary prospectus supplement.</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;</FONT></TD>
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt"><B>CUSIP / ISIN:</B></FONT></TD>
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">092113AT6 / US092113AT65</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;</FONT></TD>
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt"><B>Joint Book-Running Managers: </B></FONT></TD>
    <TD><P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Wells
        Fargo Securities, LLC</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">J.P.
        Morgan Securities LLC</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">RBC
        Capital Markets, LLC</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Scotia
        Capital (USA) Inc.</FONT></P></TD></TR>
<TR STYLE="vertical-align: top">
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;</FONT></TD>
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt"><B>Co-Managers:</B></FONT></TD>
    <TD><P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">BMO
        Capital Markets Corp.</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">BofA
        Securities, Inc.</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Credit
        Suisse Securities (USA) LLC</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Morgan
        Stanley &amp; Co. LLC</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">MUFG
        Securities Americas Inc.</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">U.S.
        Bancorp Investments, Inc.</FONT></P></TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<!-- Field: Rule-Page --><DIV STYLE="width: 25%"><DIV STYLE="font-size: 1pt; border-top: Black 1pt solid">&nbsp;</DIV></DIV><!-- Field: /Rule-Page -->

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;* These securities ratings have been provided by S&amp;P,
Moody&rsquo;s and Fitch, respectively. None of these ratings is a recommendation to buy, sell or hold these securities. Each rating
may be subject to revision or withdrawal at any time, and should be evaluated independently of any other rating.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">** It is expected that delivery of the notes will be made against
payment thereof on or about June 17, 2020, which will be the third business day following the date of the pricing of the notes
(such settlement being referred to as &ldquo;T+3&rdquo;). Under Rule 15c6-1 under the Exchange Act, trades in the secondary market
are generally required to settle in two business days, unless the parties to any such trade expressly agree otherwise. Accordingly,
purchasers who wish to trade notes prior to the second business day before the settlement date will be required, by virtue of the
fact that the notes will initially settle in T+3, to specify an alternate settlement arrangement at the time of any such trade
to prevent a failed settlement.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><B>The issuer has filed a registration statement (including
a prospectus and related preliminary prospectus supplement) with the SEC for the offering to which this communication relates.
Before you invest, you should read the prospectus and preliminary prospectus supplement in that registration statement and other
documents the issuer has filed with the SEC for more complete information about the issuer and this offering. You may get these
documents for free by visiting EDGAR on the SEC Web site at www.sec.gov. Alternatively, the issuer, any underwriter or any dealer
participating in the offering will arrange to send you the prospectus if you request it by calling Wells Fargo Securities, LLC
toll-free at 1-800-645-3751, J.P. Morgan Securities LLC collect at 1-212-834-4533 or RBC Capital Markets, LLC toll free at 1-866-375-6829.</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0in"><B>ANY DISCLAIMERS OR OTHER NOTICES THAT MAY
APPEAR BELOW ARE NOT APPLICABLE TO THIS COMMUNICATION AND SHOULD BE DISREGARDED. SUCH DISCLAIMERS OR OTHER NOTICES WERE AUTOMATICALLY
GENERATED AS A RESULT OF THIS COMMUNICATION BEING SENT VIA BLOOMBERG OR ANOTHER EMAIL SYSTEM.</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0in">&nbsp;</P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><B></B></P>

<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">SCHEDULE C</P>

<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Wells Fargo Securities, LLC</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">550 South Tryon Street &ndash; 5th Floor</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Charlotte, North Carolina 28202</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">J.P. Morgan Securities LLC</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">383 Madison Avenue</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">New York, New York 10179</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">RBC Capital Markets, LLC</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Brookfield Place</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">200 Vesey Street, 8th Floor</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">New York, New York 10281</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Dear Ladies and Gentlemen:</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">We have audited the consolidated balance sheets of Black Hills
Corporation and subsidiaries (the &quot;Company&quot;) as of December 31, 2019 and 2018, and the consolidated statements of income,
comprehensive income, equity and cash flows for each of the three years in the period ended December 31, 2019, the related financial
statement schedule, and the effectiveness of the Company's internal control over financial reporting as of December 31, 2019. The
Company's financial statements and financial statement schedule and our report thereon and our report on the effectiveness of the
Company&rsquo;s internal control over financial reporting are included in the Company&rsquo;s annual report on Form 10-K for the
year ended December 31, 2019, and incorporated by reference in the Company&rsquo;s registration statement (No. 333-219705) on Form
S-3 filed by the Company under the Securities Act of 1933 (the Act). The registration statement and related prospectus dated August
4, 2017, supplemented by the preliminary prospectus supplement dated June 12, 2020, are herein referred to as the registration
statement.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">In connection with the registration statement &mdash;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.25in; text-indent: -0.25in">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0; width: 100%"><TR STYLE="vertical-align: top; text-align: justify">
<TD STYLE="width: 0in"></TD><TD STYLE="width: 0.25in; text-align: left">1.</TD><TD STYLE="text-align: left">We are an independent registered public accounting firm
with respect to the Company within the meaning of the Act and the applicable rules and regulations thereunder adopted by the Securities
and Exchange Commission (SEC) and the Public Company Accounting Oversight Board (United States) (PCAOB).</TD>
</TR></TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.25in; text-indent: -0.25in">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0; width: 100%"><TR STYLE="vertical-align: top; text-align: justify">
<TD STYLE="width: 0in"></TD><TD STYLE="width: 0.25in; text-align: left">2.</TD><TD STYLE="text-align: left">In our opinion, the consolidated financial statements
and financial statement schedule audited by us and incorporated by reference in the registration statement comply as to form in
all material respects with the applicable accounting requirements of the Act and the Securities Exchange Act of 1934, and the
related rules and regulations adopted by the SEC.</TD>
</TR></TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.25in; text-indent: -0.25in">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0; width: 100%"><TR STYLE="vertical-align: top; text-align: justify">
<TD STYLE="width: 0in"></TD><TD STYLE="width: 0.25in; text-align: left">3.</TD><TD STYLE="text-align: left">We have not audited any financial statements of the Company
as of any date or for any period subsequent to December 31, 2019; although we have conducted an audit for the year ended December
31, 2019, the purpose (and therefore the scope) of the audit was to enable us to express our opinion on the consolidated financial
statements as of December 31, 2019, and for the year then ended, but not on the consolidated financial statements for any interim
period within that year. Therefore, we are unable to and do not express any opinion on the unaudited condensed consolidated balance
sheet as of March 31, 2020, and the unaudited condensed consolidated statements of income, comprehensive income, equity, and cash
flows for the three-month periods ended March 31, 2020 and 2019, included in the Company&rsquo;s quarterly report on Form 10-Q
for the quarter ended March 31, 2020, incorporated by reference in the registration statement, or the financial position, results
of operations, or cash flows as of any date or for any period subsequent to December 31, 2019.</TD>
</TR></TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.25in; text-indent: -0.25in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.25in; text-indent: -0.25in"></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.25in; text-indent: -0.25in">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0; width: 100%"><TR STYLE="vertical-align: top; text-align: justify">
<TD STYLE="width: 0in"></TD><TD STYLE="width: 0.25in; text-align: left">4.</TD><TD STYLE="text-align: left">For purposes of this letter, we have read the 2020 minutes
of the meetings of the stockholders, the board of directors, and committees of the board of directors of the Company as set forth
in the minute books at June 9, 2020, officials of the Company having advised us that the minutes of all such meetings through
that date were set forth therein, except for the minutes of the April 27, Audit Committee Meeting, April 27, Board of Directors
Meeting, April 27, Compensation Committee Meeting, April 27, Governance Committee Meeting, April 28, Annual Shareholder Meeting,
May 4, Audit Committee Meeting, and June 9, Pricing Committee Meeting, for which we inquired of the Manager of Corporate Governance
and were provided the meeting agendas; we have carried out other procedures to June 9, 2020, as follows (our work did not extend
to the period from June 10, 2020 to June 12, 2020, inclusive):</TD>
</TR>     <TR STYLE="vertical-align: top; text-align: justify">
<TD>&nbsp;</TD><TD STYLE="text-align: left">&nbsp;</TD><TD STYLE="text-align: left">&nbsp;</TD></TR>
</TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.25in"></TD><TD STYLE="width: 0.25in"><FONT STYLE="font-family: Times New Roman, Times, Serif">a)</FONT></TD><TD>With respect to the three-month periods ended March 31, 2020 and 2019, we have <FONT STYLE="font-family: Times New Roman, Times, Serif">&mdash;</FONT></TD></TR>                                                                                                                                                                                                                                                                                                    <TR STYLE="vertical-align: top">
<TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD></TR>
</TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in">(i)</TD><TD>Performed the procedures specified by the PCAOB for a review of interim financial information as described in PCAOB AS 4105
on the unaudited condensed consolidated financial statements for these periods, described in 3, included in the Company&rsquo;s
quarterly report on Form 10-Q for the quarter ended March 31, 2020 incorporated by reference in the registration statement. <FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;</FONT></TD></TR></TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1in">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in">(ii)</TD><TD>Inquired of certain officials of the Company who have responsibility for financial and accounting matters whether the unaudited
condensed consolidated financial statements referred to in a(i) comply as to form in all material respects with the applicable
accounting requirements of the Exchange Act as it applies to Form 10-Q and the related rules and regulations adopted by the SEC.</TD></TR></TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1in">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.25in"></TD><TD STYLE="width: 0.25in">b)</TD><TD>With respect to the period from April 1, 2020 to April 30, 2020, we have &ndash;</TD></TR></TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.25in">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in">(i)</TD><TD>Read the unaudited consolidated financial statements of the Company and subsidiaries for April of both 2020 and 2019 furnished
to us by the Company, officials of the Company having advised us that no such financial statements as of any date or for any period
subsequent to April 30, 2020, were available. The financial information for April of both 2020 and 2019 is incomplete in that it
omits the consolidated statements of equity, other comprehensive income, and cash flows, and other disclosures required by accounting
principles generally accepted in the United States of America.</TD></TR></TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1in">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in">(ii)</TD><TD>Inquired of certain officials of the Company who have responsibility for financial and accounting matters whether the unaudited
consolidated financial statements referred to in b (i) are stated on a basis substantially consistent with that of the audited
consolidated financial statements incorporated by reference in the registration statement.</TD></TR></TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.25in">The foregoing procedures do not constitute an audit
conducted in accordance with the standards of the PCAOB.&nbsp;Also, they would not necessarily reveal matters of significance with
respect to the comments in the following paragraph.&nbsp;Accordingly, we make no representations regarding the sufficiency of the
foregoing procedures for your purposes.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.25in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.25in"></P>

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    <DIV STYLE="page-break-before: always; margin-top: 6pt; margin-bottom: 12pt"><P STYLE="margin: 0pt">&nbsp;</P></DIV>
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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.25in">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0; width: 100%"><TR STYLE="vertical-align: top; text-align: justify">
<TD STYLE="width: 0in"></TD><TD STYLE="width: 0.25in; text-align: left">5.</TD><TD STYLE="text-align: justify">Nothing came to our attention as a result of the foregoing
procedures, however, that caused us to believe that &mdash;</TD>
</TR></TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.25in; text-indent: -0.25in">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.25in"></TD><TD STYLE="width: 0.25in">a)</TD><TD></TD></TR></TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.75in; text-indent: -0.25in">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top; text-align: justify">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in; text-align: left">(i)</TD><TD STYLE="text-align: left"><FONT STYLE="font-family: Times New Roman, Times, Serif">Any
material modifications should be made to the unaudited condensed consolidated financial statements described in 3, incorporated
by reference in the registration statement, for them to be in conformity with accounting principles generally accepted in the
United States of America.</FONT></TD>
</TR></TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.75in; text-indent: -0.25in">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top; text-align: justify">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in; text-align: left">(ii)</TD><TD STYLE="text-align: left">The unaudited condensed consolidated financial statements
described in 3 do not comply as to form in all material respects with the applicable accounting requirements of the Exchange Act
as it applies to Form 10-Q and the related rules and regulations adopted by the SEC.</TD>
</TR></TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.75in; text-indent: -0.25in">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.25in"></TD><TD STYLE="width: 0.25in">b)</TD><TD></TD></TR></TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 40.5pt">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in">(i) <FONT STYLE="font-family: Times New Roman, Times, Serif">At
April 30, 2020, there were any change in common stock, increase in long-term debt, or any decreases in consolidated net current
assets or stockholders&rsquo; equity of the Company compared with amounts shown in the March 31, 2020 unaudited condensed consolidated
balance sheet included in the registration statement, except as described below (in thousands of dollars): </FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 40.5pt">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; width: 93%; font: 10pt Times New Roman, Times, Serif; margin-left: 0.5in">
<TR STYLE="vertical-align: bottom">
<TD STYLE="font-size: 10pt">&nbsp;</TD>
<TD STYLE="font-size: 10pt; font-weight: bold; padding-bottom: 1pt">&nbsp;</TD>
<TD COLSPAN="2" STYLE="border-bottom: Black 1pt solid; white-space: nowrap; font-size: 10pt; font-weight: bold; text-align: center">March 31, 2020</TD>
<TD STYLE="padding-bottom: 1pt; font-size: 10pt; font-weight: bold">&nbsp;</TD>
<TD STYLE="font-size: 10pt; font-weight: bold; padding-bottom: 1pt">&nbsp;</TD>
<TD COLSPAN="2" STYLE="border-bottom: Black 1pt solid; font-size: 10pt; font-weight: bold; text-align: center">April 30, 2020</TD>
<TD STYLE="padding-bottom: 1pt; font-size: 10pt; font-weight: bold">&nbsp;</TD>
<TD STYLE="font: 10pt Times New Roman, Times, Serif; padding-bottom: 1pt">&nbsp;</TD>
<TD COLSPAN="2" STYLE="border-bottom: Black 1pt solid; font: 10pt Times New Roman, Times, Serif; text-align: center"><B>&nbsp;</B><B>Increase<BR>
</B> <B>(Decrease)</B></TD>
<TD STYLE="padding-bottom: 1pt; font: 10pt Times New Roman, Times, Serif">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: rgb(204,238,255)">
<TD STYLE="width: 61%; font-size: 10pt; text-align: left; padding-bottom: 1pt">Long-term Debt</TD>
<TD STYLE="width: 1%; font-size: 10pt; padding-bottom: 1pt">&nbsp;</TD>
<TD STYLE="width: 1%; font-size: 10pt; text-align: left">&nbsp;</TD>
<TD STYLE="width: 10%; font-size: 10pt; text-align: right">3,136.9</TD>
<TD STYLE="width: 1%; padding-bottom: 1pt; font-size: 10pt; text-align: left">&nbsp;</TD>
<TD STYLE="width: 1%; font-size: 10pt; padding-bottom: 1pt">&nbsp;</TD>
<TD STYLE="width: 1%; font-size: 10pt; text-align: left">&nbsp;</TD>
<TD STYLE="width: 10%; font-size: 10pt; text-align: right">3,137.2</TD>
<TD STYLE="width: 1%; padding-bottom: 1pt; font-size: 10pt; text-align: left">&nbsp;</TD>
<TD STYLE="width: 1%; font-size: 10pt; padding-bottom: 1pt">&nbsp;</TD>
<TD STYLE="width: 1%; font-size: 10pt; text-align: left">&nbsp;</TD>
<TD STYLE="width: 10%; font-size: 10pt; text-align: right">0.3</TD>
<TD STYLE="width: 1%; padding-bottom: 1pt; font-size: 10pt; text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom; background-color: White">
<TD STYLE="font: 10pt Times New Roman, Times, Serif; text-align: left; padding-bottom: 1pt">Net Current Assets</TD>
<TD STYLE="font-size: 10pt; padding-bottom: 1pt">&nbsp;</TD>
<TD STYLE="font-size: 10pt; text-align: left">&nbsp;</TD>
<TD STYLE="font-size: 10pt; text-align: right">(230.2</TD>
<TD STYLE="padding-bottom: 1pt; font-size: 10pt; text-align: left">)</TD>
<TD STYLE="font-size: 10pt; padding-bottom: 1pt">&nbsp;</TD>
<TD STYLE="font-size: 10pt; text-align: left">&nbsp;</TD>
<TD STYLE="font-size: 10pt; text-align: right">(258.4</TD>
<TD STYLE="padding-bottom: 1pt; font-size: 10pt; text-align: left">)</TD>
<TD STYLE="font-size: 10pt; padding-bottom: 1pt">&nbsp;</TD>
<TD STYLE="font-size: 10pt; text-align: left">&nbsp;</TD>
<TD STYLE="font-size: 10pt; text-align: right">(28.2</TD>
<TD STYLE="padding-bottom: 1pt; font-size: 10pt; text-align: left">)</TD></TR>
</TABLE>


<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 40.5pt">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in">(ii) For the period from April 1, 2020 to April 30,
2020, there were any decreases, as compared with the corresponding period in the preceding year, in consolidated operating revenues
or in the total or per-share amounts of net income, except in all instances for changes, increases, or decreases that the registration
statement discloses have occurred or may occur. For the period from July 1, 2019, to August 31, 2019, there were any decreases,
as compared with the corresponding period in the preceding year, in consolidated operating revenues or in the total or per-share
amounts of net income, except in all instances for changes, increases, or decreases that the registration statement discloses have
occurred or may occur, except as described below (in thousands of dollars): For the period from July 1, 2019, to August 31, 2019,
there were any decreases, as compared with the corresponding period in the preceding year, in consolidated operating revenues or
in the total or per-share amounts of net income, except in all instances for changes, increases, or decreases that the registration
statement discloses have occurred or may occur, except as described below (in thousands of dollars): For the period from July 1,
2019, to August 31, 2019, there were any decreases, as compared with the corresponding period in the preceding year, in consolidated
operating revenues or in the total or per-share amounts of net income, except in all instances for changes, increases, or decreases
that the registration statement discloses have occurred or may occur, except as described below (in thousands of dollars): For
the period from July 1, 2019, to August 31, 2019, there were any decreases, as compared with the corresponding period in the preceding
year, in consolidated operating revenues or in the total or per-share amounts of net income, except in all instances for changes,
increases, or decreases that the registration statement discloses have occurred or may occur, except as described below (in thousands
of dollars):</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 40.5pt">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0; width: 100%"><TR STYLE="vertical-align: top; text-align: justify">
<TD STYLE="width: 0in"></TD><TD STYLE="width: 0.25in; text-align: left">6.</TD><TD STYLE="text-align: left">As mentioned in 4b(i), Company officials have advised
us that no consolidated financial statements as of any date or for any period subsequent to April 30, 2020, are available; accordingly,
the procedures carried out by us with respect to changes in financial statement items after April 30, 2020, have, of necessity,
been even more limited than those with respect to the periods referred to in 4. We have inquired of certain officials of the Company
who have responsibility for financial and accounting matters whether (a) at June 9, 2020, there was any change in the common stock,
increase in long-term debt, or any decreases in consolidated net current assets or stockholders&rsquo; equity of the consolidated
companies as compared with amounts shown in the March 31, 2020, unaudited condensed consolidated balance sheet incorporated by
reference in the registration statement or (b) for the period from April 1, 2020 to June 9, 2020, there were any decreases, as
compared with the corresponding period in the preceding year, in consolidated operating revenues or in the total or per-share
amounts of net income. On the basis of these inquiries and our reading of the minutes as described
in 4, nothing has come to our attention that has caused us to believe that there was any such change, increase, or decrease, except
in all instances for changes, increases, or decreases that the registration statement discloses have occurred or may occur.</TD>
</TR></TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.25in; text-indent: -0.25in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.25in; text-indent: -0.25in"></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.25in">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0; width: 100%"><TR STYLE="vertical-align: top; text-align: justify">
<TD STYLE="width: 0in"></TD><TD STYLE="width: 0.25in; text-align: left">7.</TD><TD STYLE="text-align: justify">For purposes of this letter, we have also read the items
identified by you on the attached pages of the Company&rsquo;s Annual Report on Form 10-K for the year ended December 31, 2019,
the Company&rsquo;s Quarterly Reports on Form 10-Q for the periods ended March 31, 2020, the registration statement, and the Company&rsquo;s
2019 Proxy Statement, and have performed the following procedures, which were applied as indicated with respect to the letters
explained below:</TD>
</TR></TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.25in; text-indent: -0.25in">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.25in"></TD><TD STYLE="width: 0.25in">A.</TD><TD>Compared the amount with the corresponding amount in the Company&rsquo;s audited consolidated financial statements or notes
thereto included in the Company&rsquo;s Annual Report on Form 10-K for the period indicated and found the amounts to be in agreement.</TD></TR></TABLE>

<P STYLE="margin-top: 0pt; margin-bottom: 0pt; font: 10pt Times New Roman, Times, Serif">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.25in"></TD><TD STYLE="width: 0.25in">B.</TD><TD>Recalculated based on amounts appearing in the audited consolidated financial statements or notes thereto included in the Company&rsquo;s
Annual Report on Form 10-K for the period indicated.</TD></TR></TABLE>

<P STYLE="margin-top: 0pt; margin-bottom: 0pt; font: 10pt Times New Roman, Times, Serif">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.25in"></TD><TD STYLE="width: 0.25in">C.</TD><TD>Compared the amount with the corresponding amount in the Company&rsquo;s unaudited consolidated financial statements or notes
thereto included in the Company&rsquo;s Quarterly Report on Form 10-Q for the period indicated and found the amounts to be in agreement.</TD></TR></TABLE>

<P STYLE="margin-top: 0pt; margin-bottom: 0pt; font: 10pt Times New Roman, Times, Serif">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.25in"></TD><TD STYLE="width: 0.25in">D.</TD><TD>Recalculated based on amounts appearing in the unaudited consolidated financial statements or notes thereto included in the
Company&rsquo;s Quarterly Report on Form 10-Q for the period indicated.</TD></TR></TABLE>

<P STYLE="margin-top: 0pt; margin-bottom: 0pt; font: 10pt Times New Roman, Times, Serif">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.25in"></TD><TD STYLE="width: 0.25in">E.</TD><TD>Compared the amounts or percentages with or proved the arithmetic accuracy of the amounts or percentages (subject to rounding,
as applicable) based on financial schedules or reports prepared by the Company and found them to be in agreement. Amounts appearing
in such schedules or reports were compared with accounting records of the Company and found to be in agreement.</TD></TR></TABLE>

<P STYLE="margin-top: 0pt; margin-bottom: 0pt; font: 10pt Times New Roman, Times, Serif">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.25in"></TD><TD STYLE="width: 0.25in">F.</TD><TD>Recalculated the amounts or percentages and proved the arithmetic accuracy of the amounts or percentages (subject to rounding,
as applicable).</TD></TR></TABLE>

<P STYLE="margin-top: 0pt; margin-bottom: 0pt; font: 10pt Times New Roman, Times, Serif">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.25in"></TD><TD STYLE="width: 0.25in">G.</TD><TD>Recalculated the amounts or percentages and proved the arithmetic accuracy of the amounts or percentages (subject to rounding,
as applicable). It should be understood that (1) we make no representations regarding the Company's determination and presentation
of the non-GAAP measures of financial performance, Gross Margin and EPS, as adjusted, (2) the non-GAAP measures presented may not
be comparable to similarly titled measures reported by other companies, and (3) we make no comment as to whether the non-GAAP measures
comply with the requirements of Item 10 of Regulation S-K.</TD></TR>                                                                    <TR STYLE="vertical-align: top">
<TD>&nbsp;</TD><TD>&nbsp;</TD><TD>&nbsp;</TD></TR>
</TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.25in"></TD><TD STYLE="width: 0.25in">H.</TD><TD>We recalculated the amount shown based on the amounts appearing in the registration statement for the period indicated as historically
reported and found them to be in agreement. The ratio of earnings included in the registration statement filed August 4, 2017 do
not include the reclassifications of certain discontinued operations that occurred subsequently and were reported in the Company&rsquo;s
Form 10-K for the year ended December 31, 2017. We also compared the presentation of the ratio of earnings to fixed charges with
the requirements of Item 503(d) of Regulation S-K. We also inquired of certain officials of the Company who have responsibility
for financial and accounting matters whether the ratio of earnings to fixed charges computations conform in all material respects
with the disclosure requirements of Item 503(d) of Regulation S-K. Nothing came to our attention that caused us to believe that
the ratio of earnings to fixed charges computations do not conform in all material respects with the disclosure requirements of
Item 503(d) of Regulation S-K.</TD></TR></TABLE>

<P STYLE="margin-top: 0pt; margin-bottom: 0pt; font: 10pt Times New Roman, Times, Serif">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0; width: 100%"><TR STYLE="vertical-align: top; text-align: justify">
<TD STYLE="width: 0in"></TD><TD STYLE="width: 0.25in; text-align: left">8.</TD><TD STYLE="text-align: justify">Our audit of the consolidated financial statements for
the periods referred to in the introductory paragraph of this letter comprised audit tests and procedures deemed necessary for
the purpose of expressing an opinion on such financial statements taken as a whole. For none of the periods referred to therein,
or any other period, did we perform audit tests for the purpose of expressing an opinion on individual balances of accounts or
summaries of selected transactions such as those enumerated above and, accordingly, we express no opinion thereon.</TD>
</TR></TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.25in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.25in"></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.25in">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 0.25in"><FONT STYLE="font-size: 10pt">9.</FONT></TD><TD>It should be understood that we make no representations regarding questions of legal interpretation or regarding the sufficiency
for your purposes of the procedures enumerated in paragraph 7; also, such procedures would not necessarily reveal any material
misstatement of the amounts or percentages enumerated above. Further, we have addressed ourselves solely to the foregoing data
as set forth in the registration statement and make no representations regarding the adequacy of disclosure or regarding whether
any material facts have been omitted.</TD></TR></TABLE>

<P STYLE="margin-top: 0pt; margin-bottom: 0pt; font: 10pt Times New Roman, Times, Serif">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 0.25in"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">10.</FONT></TD><TD>This letter is solely for the information of the addressees and to assist the underwriter in conducting and documenting its
investigation of the affairs of the Company in connection with the offering of the securities covered by the registration statement,
and it is not to be used, circulated, quoted, or otherwise referred to by you for any other purpose, including but not limited
to the registration, purchase, or sale of securities, nor is it to be filed with or referred to in whole or in part in the registration
statement or any other document, except that reference may be made to it in the underwriting agreement or in any list of closing
documents pertaining to the offering of the securities covered by the registration statement.</TD></TR></TABLE>

<P STYLE="margin-top: 0pt; margin-bottom: 0pt; font: 10pt Times New Roman, Times, Serif">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.25in; text-indent: -0.25in">Yours truly,</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">SCHEDULE D</P>

<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">(&ldquo;<B>Significant Subsidiaries</B>&rdquo;)</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif; border-collapse: collapse">
<TR STYLE="vertical-align: top">
    <TD STYLE="width: 75%; border: Black 1pt solid; padding-right: 5.4pt; padding-bottom: 12pt; padding-left: 5.4pt"><B>Subsidiary Name</B></TD>
    <TD STYLE="width: 25%; border-top: Black 1pt solid; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-bottom: 12pt; padding-left: 5.4pt"><B>State of Organization</B></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt"><FONT STYLE="font-size: 10pt">Black Hills Colorado Electric, LLC</FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-bottom: 12pt; padding-left: 5.4pt">Delaware</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt"><FONT STYLE="font-size: 10pt">Black Hills Power, Inc.</FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-bottom: 12pt; padding-left: 5.4pt">South Dakota</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 5.4pt; padding-bottom: 12pt; padding-left: 5.4pt">Black Hills Service Company, LLC</TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-bottom: 12pt; padding-left: 5.4pt">South Dakota</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 5.4pt; padding-bottom: 12pt; padding-left: 5.4pt">Black Hills Utility Holdings, Inc.</TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-bottom: 12pt; padding-left: 5.4pt">South Dakota</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 5.4pt; padding-bottom: 12pt; padding-left: 5.4pt">Black Hills Nebraska Gas, LLC</TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-bottom: 12pt; padding-left: 5.4pt">Delaware</TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: right">EXHIBIT A</P>

<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: right">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">June [17], 2020</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Wells Fargo Securities, LLC</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">550 South Tryon Street &ndash; 5th Floor</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Charlotte, North Carolina 28202</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">J.P. Morgan Securities LLC</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">383 Madison Avenue</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">New York, New York 10179</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">RBC Capital Markets, LLC</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Brookfield Place</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">200 Vesey Street, 8th Floor</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">New York, New York 10281</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 297pt 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; margin-left: 0">and the several other Underwriters listed in Schedule&nbsp;A
to the Underwriting Agreement referenced below</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 297pt 0pt 0">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in">Re:</TD><TD><U>Offering by Black Hills Corporation of $[400,000,000] principal amount of its [&bull;]% Notes due 20[30]</U></TD></TR></TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Ladies and Gentlemen:</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">We have acted as counsel to Black Hills
Corporation, a South Dakota corporation (the &ldquo;<U>Company</U>&rdquo;), in connection with the Underwriting Agreement, dated
June [12], 2020 (the &ldquo;<U>Underwriting Agreement</U>&rdquo;), by and among the Company and Wells Fargo Securities, LLC, J.P.&nbsp;Morgan
Securities LLC and RBC Capital Markets, LLC, as representatives of the several underwriters listed in Schedule A thereto (the &ldquo;<U>Underwriters</U>&rdquo;),
relating to the issuance by the Company of $[400,000,000] principal amount of its [&bull;]% Notes due 20[30] (the &ldquo;<U>Offered
Securities</U>&rdquo;). Capitalized terms used and not defined herein have the respective meanings ascribed to such terms in the
Underwriting Agreement. We are delivering this opinion letter pursuant to Section&nbsp;7(d) of the Underwriting Agreement.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">The Offered Securities are to be issued
under an indenture dated as of May 21, 2003, between the Company and Wells Fargo Bank, National Association (as successor to LaSalle
Bank National Association), as Trustee (the &ldquo;<U>Trustee</U>&rdquo;) (the &ldquo;<U>Base Indenture</U>&rdquo;), as supplemented
by a first supplemental indenture dated as of May 21, 2003, a second supplemental indenture dated as of May 14, 2009, a third supplemental
indenture dated as of July 16, 2010, a fourth supplemental indenture dated as of November 19, 2013, a fifth supplemental indenture
dated as of January 13, 2016, a sixth supplemental indenture dated as of August 19, 2016, a seventh supplemental indenture dated
as of August 17, 2018, an eighth supplemental indenture dated as of October 3, 2019 and a ninth supplemental indenture dated as
of the Closing Date (the &ldquo;<U>Supplemental Indenture</U>&rdquo; and, the Base Indenture as supplemented by such Supplemental
Indenture, the &ldquo;<U>Indenture</U>&rdquo;). The Indenture, the Underwriting Agreement and the Offered Securities are sometimes
referred to herein collectively as the &ldquo;<U>Transaction Documents</U>.&rdquo;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">We have made such examination of law and
facts as we have deemed necessary as a basis for our opinions set forth below. In connection with such examination, we have reviewed
the following documents:</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.5in"><FONT STYLE="font-family: Times New Roman, Times, Serif">(d)
</FONT>The Company&rsquo;s automatic shelf Registration Statement on Form S-3 (File No. 333-219705) filed with the Securities and
Exchange Commission (the &ldquo;<U>Commission</U>&rdquo;) on August 4, 2017 (the &ldquo;<U>Registration Statement</U>&rdquo;);</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.5in"><FONT STYLE="font-family: Times New Roman, Times, Serif">(e) </FONT>The
prospectus dated August 4, 2017 included within the Registration Statement (the &ldquo;<U>Base Prospectus</U>&rdquo;), the
preliminary prospectus supplement dated June [12], 2020 relating to the Offered Securities (together with the Base
Prospectus, the &ldquo;<U>Preliminary Prospectus</U>&rdquo;), the General Disclosure Package, and the final prospectus
supplement dated June [17]&cedil;2020 relating to the Offered Securities (together with the Base Prospectus, the
&ldquo;<U>Final Prospectus</U>&rdquo;), in each case, including the documents incorporated by reference therein;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in"></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.5in"><FONT STYLE="font-family: Times New Roman, Times, Serif">(f)
</FONT>The Underwriting Agreement; and</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.5in"><FONT STYLE="font-family: Times New Roman, Times, Serif">(g)
</FONT>The Indenture, including the forms of Offered Securities attached to the Supplemental Indenture.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">Based upon and subject to the foregoing
and the qualifications set forth in <U>Annex&nbsp;I</U> attached hereto, we advise you that in our opinion:</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.5in">1.<FONT STYLE="font-family: Times New Roman, Times, Serif">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</FONT>The Indenture has been duly qualified under the Trust Indenture Act of 1939, as amended.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.5in">2.<FONT STYLE="font-family: Times New Roman, Times, Serif">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</FONT>The Offered Securities delivered on the Closing Date conform in all material respects to the description thereof contained
in the General Disclosure Package and the Final Prospectus.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.5in">3.<FONT STYLE="font-family: Times New Roman, Times, Serif">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</FONT>When executed and authenticated in accordance with the provisions of the Indenture and delivered and paid for in accordance
with the terms of the Underwriting Agreement, the Offered Securities will be valid and binding obligations of the Company, enforceable
against the Company in accordance with their terms and will be entitled to the benefits of the Indenture, subject in each case
to applicable bankruptcy, insolvency, voidable transaction, fraudulent conveyance, fraudulent transfer, reorganization, moratorium,
assignment for the benefit of creditors and other similar laws now or hereafter in effect relating to or affecting creditors&rsquo;
rights generally and equitable principles of general applicability (regardless of whether considered in a proceeding in equity
or at law).</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.5in">4.<FONT STYLE="font-family: Times New Roman, Times, Serif">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</FONT>The Indenture constitutes a valid and binding agreement of the Company, enforceable against the Company in accordance with
its terms, subject to applicable bankruptcy, insolvency, voidable transaction, fraudulent conveyance, fraudulent transfer, reorganization,
moratorium, assignment for the benefit of creditors and other similar laws now or hereafter in effect relating to or affecting
creditors&rsquo; rights generally and equitable principles of general applicability (regardless of whether considered in a proceeding
in law or at equity).</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.5in">5.<FONT STYLE="font-family: Times New Roman, Times, Serif">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</FONT>The execution and delivery by the Company of the Supplemental Indenture, the Offered Securities and the Underwriting Agreement,
and the performance by the Company of its obligations under the Transaction Documents, will not violate or result in a breach of
any provision of federal law or the laws of the State of New York applicable to the Company (except no opinion is rendered with
respect to federal or state securities or Blue Sky laws or regulations adopted by the Financial Industry Regulatory Authority,
Inc. (&ldquo;<U>FINRA</U>&rdquo;) in connection with the purchase and distribution of the Offered Securities by the Underwriters).</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.5in">6.<FONT STYLE="font-family: Times New Roman, Times, Serif">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</FONT>No consent, approval, authorization or order of, or qualification with, any federal or state governmental body or agency
is required under U.S. federal law or the laws of the State of New York to be made or obtained by the Company in connection with
the performance by the Company of its obligations under the Transaction Documents or the consummation by the Company of the transactions
effected pursuant to the Underwriting Agreement, except such as have been obtained or may be required by federal or state securities
or Blue Sky laws or regulations adopted by FINRA.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.5in">7.<FONT STYLE="font-family: Times New Roman, Times, Serif">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</FONT>The Company is not, and after giving effect to the offering and sale of the Offered Securities and the application of the
proceeds thereof as described in the Final Prospectus will not be, required to register as an &ldquo;investment company&rdquo;
as such term is defined in the Investment Company Act of 1940, as amended, and the rules and regulations thereunder (the &ldquo;<U>ICA</U>&rdquo;).</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.5in"></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.5in">8.<FONT STYLE="font-family: Times New Roman, Times, Serif">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</FONT> The statements in each of the General Disclosure Package and the Final Prospectus under the captions &ldquo;Description
of the Notes&rdquo; and &ldquo;Description of Senior Debt Securities,&rdquo; insofar as such statements purport to summarize matters
of law, descriptions of statutes, rules or regulations, legal documents or legal proceedings, in each case fairly summarize in
all material respects such matters, statutes, rules, regulations, documents or proceedings when taken as a whole.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.5in">9.<FONT STYLE="font-family: Times New Roman, Times, Serif">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</FONT>The statements in each of the General Disclosure Package and the Final Prospectus under the caption &ldquo;Material U.S.
Federal Income Tax Consequences,&rdquo; insofar as such statements purport to summarize the United States federal tax laws referred
to therein, fairly summarize in all material respects the United States federal tax laws referred to therein.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.5in">10.<FONT STYLE="font-family: Times New Roman, Times, Serif">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</FONT>The Registration Statement became effective under the Securities Act of 1933, as amended (the &ldquo;<U>Act</U>&rdquo;),
upon filing with the Commission.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.5in">11.<FONT STYLE="font-family: Times New Roman, Times, Serif">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</FONT>Each of the Registration Statement and the documents filed by the Company with the Commission pursuant to the Securities
Exchange Act of 1934, as amended (the &ldquo;<U>Exchange Act</U>&rdquo;) expressly incorporated by reference into the Registration
Statement, the General Disclosure Package or the Final Prospectus (except for the financial statements and financial schedules,
oil and gas reserve reports and other financial or accounting data included or incorporated by reference therein or omitted therefrom,
as to which we express no opinion), when such document was filed with the Commission, appeared on its face to comply as to form
in all material respects with the requirements of the Act and the Exchange Act, as applicable, and the applicable rules and regulations
of the Commission thereunder. In passing upon compliance as to the form of such documents, we have assumed that the statements
made or incorporated by reference therein are complete and correct.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">In connection with the preparation of the
General Disclosure Package and the Final Prospectus, we have participated in conferences with officers and other representatives
of the Company and the independent public accountants for the Company at which the contents of the same and related matters were
discussed. On the basis of such participation and review, but without independent verification by us of, and, other than with respect
to opinion paragraphs&nbsp;2, 8 and 9, without assuming any responsibility for, the accuracy, completeness or fairness of the statements
contained in the General Disclosure Package and the Final Prospectus, no facts have come to our attention that cause us to believe
that (a) the General Disclosure Package (except for the financial statements and financial schedules, oil and gas reserve reports
and other financial or accounting data included or incorporated by reference therein or omitted therefrom, as to which we make
no statement) as of the Applicable Time or as of the date hereof, contained or contains any untrue statement of a material fact
or omitted or omits to state a material fact necessary in order to make the statements therein, in the light of the circumstances
under which they were made, not misleading or (b) the Final Prospectus (except for the financial statements and financial schedules,
oil and gas reserve reports and other financial or accounting data included or incorporated by reference therein or omitted therefrom,
as to which we make no statement) when issued, or as of the date hereof, contained or contains any untrue statement of a material
fact or omitted or omits to state a material fact necessary in order to make the statements therein, in the light of the circumstances
under which they were made, not misleading.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">This letter and the opinions expressed herein
are being furnished solely for your information in connection with the Underwriting Agreement and may not be used, circulated,
quoted or relied upon by any other person or for any other purpose without our prior written consent, except that we hereby authorize
the Trustee to rely upon opinion paragraphs 1, 3 and 4 of this opinion letter as if they had been addressed to it.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; width: 100%">
<TR STYLE="vertical-align: bottom">
    <TD><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD>
    <TD COLSPAN="2" STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt">Very truly yours,</FONT></TD></TR>
<TR STYLE="vertical-align: bottom">
    <TD><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD>
    <TD COLSPAN="2" STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD></TR>
<TR STYLE="vertical-align: bottom">
    <TD><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD>
    <TD COLSPAN="2" STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt">FAEGRE DRINKER BIDDLE &amp; REATH LLP</FONT></TD></TR>
<TR STYLE="vertical-align: bottom">
    <TD><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD>
    <TD COLSPAN="2" STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD></TR>
<TR STYLE="vertical-align: bottom">
    <TD><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD>
    <TD COLSPAN="2" STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD></TR>
<TR STYLE="vertical-align: bottom">
    <TD STYLE="width: 50%"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif; width: 3%"><FONT STYLE="font-size: 10pt">By:</FONT></TD>
    <TD STYLE="border-bottom: Black 1pt solid; font: 10pt Times New Roman, Times, Serif; width: 47%">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom">
    <TD><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt">Brandon C. Mason, Partner</FONT></TD></TR>
</TABLE>


<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 3.25in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 3.25in"></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 3.25in">&nbsp;</P>

<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: right">EXHIBIT B</P>

<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: right">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">June [17], 2020</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Wells Fargo Securities, LLC</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">550 South Tryon Street &ndash; 5th Floor</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Charlotte, North Caroline 28202</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">J.P. Morgan Securities LLC</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">383 Madison Avenue</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">New York, New York 10179</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">RBC Capital Markets, LLC</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Brookfield Place</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">200 Vesey Street, 8th Floor</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">New York, New York 10281</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 297pt 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; margin-left: 0">and the other several Underwriters listed in Schedule&nbsp;A
to the Underwriting Agreement referenced below</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in">Re:</TD><TD><U>Offering by Black Hills Corporation of (i) $[400,000,000] principal amount of its [&bull;]% Notes due 20[30]</U></TD></TR></TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1.5in; text-align: justify; text-indent: -0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Ladies and Gentlemen:</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">I am Senior Vice President and General Counsel
of Black Hills Corporation, a South Dakota corporation (the &ldquo;<U>Company</U>&rdquo;). I have acted in such capacity in connection
with the Underwriting Agreement, dated June [12], 2020 (the &ldquo;<U>Underwriting Agreement</U>&rdquo;), by and among the Company
and Wells Fargo Securities, LLC, J.P. Morgan Securities LLC and RBC Capital Markets, LLC, as representatives of the several underwriters
listed therein (the &ldquo;<U>Underwriters</U>&rdquo;), relating to the issuance by the Company of $[400,000,000] principal amount
of its [&bull;]% Notes due 20[30] (the &ldquo;<U>Offered Securities</U>&rdquo;). Capitalized terms used and not defined herein
have the respective meanings ascribed to such terms in the Underwriting Agreement. I am delivering this opinion letter pursuant
to Section&nbsp;7(e) of the Underwriting Agreement.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">The Offered Securities are to be issued
under an indenture dated as of May 21, 2003, between the Company and Wells Fargo Bank, National Association (as successor to LaSalle
Bank National Association), as Trustee (the &ldquo;<U>Trustee</U>&rdquo;) (the &ldquo;<U>Base Indenture</U>&rdquo;), as supplemented
by a first supplemental indenture dated as of May 21, 2003, a second supplemental indenture dated as of May 14, 2009, a third supplemental
indenture dated as of July 16, 2010, a fourth supplemental indenture dated as of November 19, 2013, a fifth supplemental indenture
dated as of January 13, 2016, a sixth supplemental indenture dated as of August 19, 2016, a seventh supplemental indenture dated
as of August 17, 2018, an eighth supplemental indenture dated as of October 3, 2019 and a ninth supplemental indenture dated as
of the date hereof with respect to the Offered Securities (the &ldquo;<U>Supplemental Indenture</U>&rdquo;). The Base Indenture,
the Supplemental Indenture and the Underwriting Agreement are sometimes referred to herein collectively as the &ldquo;<U>Transaction
Documents</U>.&rdquo;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: left; text-indent: 0.5in">In providing this opinion
letter, I, or other lawyers in the Company&rsquo;s legal department, have made such examination of law and facts as we have deemed
relevant and necessary as a basis for the opinions hereinafter set forth. In connection with such examination, we have reviewed
the following documents:</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-align: left; text-indent: 0.5in">(a)<FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</FONT>The Company&rsquo;s automatic shelf Registration Statement on Form S-3 (File No. 333-219705) filed with the Securities and
Exchange Commission (the &ldquo;<U>Commission</U>&rdquo;) on August 4, 2017 (the &ldquo;<U>Registration Statement</U>&rdquo;);</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-align: justify; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-align: justify; text-indent: 0.5in"></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-align: justify; text-indent: 0.5in">&nbsp;</P>


<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-align: left; text-indent: 0.5in">(b)<FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</FONT> The prospectus dated August 4, 2017 included within the Registration Statement (the &ldquo;<U>Base Prospectus</U>&rdquo;),
the preliminary prospectus supplement dated June [12], 2020 relating to the Offered Securities (together with the Base Prospectus,
the &ldquo;<U>Preliminary Prospectus</U>&rdquo;), the General Disclosure Package, and the prospectus supplement dated June [17],
2020 relating to the Offered Securities (together with the Base Prospectus, the &ldquo;<U>Final Prospectus</U>&rdquo;), in each
case, including the documents incorporated by reference therein;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-align: justify; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-align: justify; text-indent: 0.5in">(c)<FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</FONT>The Underwriting Agreement;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-align: justify; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-align: justify; text-indent: 0.5in">(d)<FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</FONT>The Base Indenture; and</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-align: justify; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-align: justify; text-indent: 0.5in">(e)<FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</FONT>The Supplemental Indenture, including the forms of Offered Securities attached thereto.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-align: justify; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in"><FONT STYLE="font-family: Times New Roman, Times, Serif">18.
</FONT>In reaching the conclusions expressed in this opinion, I or persons responsible to me have examined the Registration Statement,
the General Disclosure Package, the Final Prospectus, the Transaction Documents, the Company&rsquo;s Restated Articles of Incorporation,
as amended (the &ldquo;<U>Articles of Incorporation</U>&rdquo;), the Company&rsquo;s Amended and Restated Bylaws dated April 24,
2017 (the &ldquo;<U>Bylaws</U>&rdquo;), certain resolutions of the Board of Directors of the Company and committees thereof relating
to, among other things, the execution and delivery of the Transaction Documents in the name of the Company and the issuance and
delivery of the Offered Securities, and such corporate documents and records of the Company and its subsidiaries, such certificates
of public officials and officers of the Company, and such other documents and matters as I have deemed necessary or appropriate
for purposes of this opinion. In rendering this opinion, I have assumed the following to be true and have conducted no investigation
to confirm such assumptions or to determine to the contrary: (a) the authenticity of all documents, instruments and certificates
submitted to me or persons responsible to me as originals; (b) the conformity with the original documents of all documents, instruments
and certificates submitted to me or persons responsible to me as certified, conformed or photostatic copies; and (c) the authenticity
of the originals from which all such copies were made. In rendering this opinion, I have relied as to matters of fact, to the extent
I deemed such reliance appropriate, without investigation, upon certificates of public officials and upon affidavits, certificates,
and written statements of officers and employees of, and accountants for, the Company.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">On the basis of and
subject to the foregoing, I am of the opinion that as of the date hereof:</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">1.<FONT STYLE="font-family: Times New Roman, Times, Serif">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</FONT><U>Good Standing of the Company</U>. The Company has been duly incorporated and is an existing corporation in good standing
under the laws of the State of South Dakota, with corporate power and authority to own its properties and conduct its business
as described in the General Disclosure Package; and the Company is duly qualified to do business as a foreign corporation in good
standing in all other jurisdictions in which its ownership or lease of property or the conduct of its business requires such qualification,
except where the failure to be so qualified and in good standing would not, individually or in the aggregate, result in a Material
Adverse Effect.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">2.<FONT STYLE="font-family: Times New Roman, Times, Serif">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</FONT><U>Significant Subsidiaries</U>. Each subsidiary of the Company listed on Schedule D to the Underwriting Agreement (each,
a &ldquo;<U>Significant Subsidiary</U>&rdquo;) has been duly incorporated or organized, as the case may be, and is existing and
in good standing under the laws of the jurisdiction of its incorporation or organization, as the case may be, with power and authority
(corporate and other) to own its properties and conduct its business as described in the General Disclosure Package; and each Significant
Subsidiary is duly qualified to do business as a foreign corporation, limited partnership, general partnership or limited liability
company, as the case may be, in good standing in all other jurisdictions in which its ownership or lease of property or the conduct
of its business requires such qualification, except where the failure to be so qualified and in good standing would not, individually
or in the aggregate, result in a Material Adverse Effect; all of the issued and outstanding capital stock or partnership or limited
liability company interests, as the case may be, of each Significant Subsidiary have been duly authorized and validly issued and,
with respect to the capital stock of each Significant Subsidiary which is a corporation, are fully paid and nonassessable; and
the capital stock or partnership or limited liability company interests, as the case may be, of each Significant Subsidiary owned
by the Company, directly or through subsidiaries, is owned free from liens, encumbrances and defects.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in"></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">3.<FONT STYLE="font-family: Times New Roman, Times, Serif">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</FONT> <U>Transaction Documents; Offered Securities</U>. Each Transaction Document has been duly authorized, executed and delivered
by the Company, and the Offered Securities delivered on the Closing Date have been duly authorized, executed and delivered by the
Company.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">4.<FONT STYLE="font-family: Times New Roman, Times, Serif">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</FONT><U>Authority.</U> The Company has full corporate power and authority to authorize, issue and sell the Offered Securities
as contemplated by the Underwriting Agreement.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">5.<FONT STYLE="font-family: Times New Roman, Times, Serif">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</FONT><U>Registration Rights</U>. Except as disclosed in the General Disclosure Package, there are no contracts, agreements or
understandings known to me between the Company and any person granting such person the right to require the Company to file a registration
statement under the Act with respect to any securities of the Company owned or to be owned by such person or to require the Company
to include such securities in the securities registered pursuant to the Registration Statement or in any securities being registered
pursuant to any other registration statement filed by the Company under the Act.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">6.<FONT STYLE="font-family: Times New Roman, Times, Serif">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</FONT><U>Possession of Licenses</U>. To my knowledge, except as disclosed in the General Disclosure Package, the Company and each
of its subsidiaries possess adequate Licenses issued by appropriate governmental agencies or bodies necessary to conduct the business
as now operated by them as described in the General Disclosure Package and, except as described in the General Disclosure Package,
I am not aware of the receipt of any notice of proceedings relating to the revocation or modification of any such License that,
if determined adversely to the Company or any of its subsidiaries, would individually or in the aggregate have a Material Adverse
Effect.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">7.<FONT STYLE="font-family: Times New Roman, Times, Serif">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</FONT><U>Environmental Laws</U>. To my knowledge, except as disclosed in the General Disclosure Package, the Company and each
subsidiary of the Company (A) are in compliance with any and all applicable environmental laws (as defined in the Underwriting
Agreement), (B) have received all permits, licenses and other approvals required of it under applicable environmental laws to conduct
its business and (C) are in compliance with all terms and conditions of each such permit, license and approval, except where such
noncompliance with environmental laws, failure to receive required permits, licenses or other approvals or failure to comply with
the terms and conditions of such permits, licenses or approvals would not, individually or in the aggregate, have a Material Adverse
Effect.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">8.<FONT STYLE="font-family: Times New Roman, Times, Serif">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</FONT><U>Absence of Further Requirements</U>. No consent, approval, authorization or order of, or filing with, any governmental
agency or body or any court is required under South Dakota law, the Public Utility Holding Company Act of 2005, as amended (&ldquo;<U>PUHCA</U>&rdquo;),
the U.S. Energy Policy Act of 2005, as amended (the &ldquo;<U>Energy Policy Act</U>&rdquo;), or the U.S. Federal Power Act, as
amended (the &ldquo;<U>Federal Power Act</U>&rdquo;), for the consummation of the transactions contemplated by the Underwriting
Agreement in connection with the issuance and sale of the Offered Securities by the Company, except such as have been obtained
and such as may be required under state securities laws.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">9.<FONT STYLE="font-family: Times New Roman, Times, Serif">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</FONT><U>Absence of Defaults and Conflicts Resulting from Transaction</U>. The execution and delivery by the Company of the Supplemental
Indenture and the Underwriting Agreement and the performance by the Company of the Transaction Documents and the issuance and sale
of the Offered Securities and compliance with the terms and provisions thereof will not result in a breach or violation of (A)
the Articles of Incorporation of the Company or the Bylaws of the Company or (B) any of the terms and provisions of, or constitute
a default under, or result in the imposition of any lien, charge or encumbrance upon any property or assets of the Company or any
of its subsidiaries pursuant to (i) the PUHCA, the Energy Policy Act or the Federal Power Act or any rule, regulation or, to my
knowledge, order of any governmental agency or body relating to the PUHCA, the Energy Policy Act or the Federal Power Act or any
court having jurisdiction over the Company or any subsidiary of the Company or any of their properties in a proceeding relating
to the PUHCA, the Energy Policy Act or the Federal Power Act or (ii) any agreement or instrument to which the Company or any of
its subsidiaries is a party or by which the Company or any of its subsidiaries is bound or to which any of the properties of the
Company or any of its subsidiaries is subject, except in the case of this clause (B)(ii) for such breaches, violations, defaults
or impositions as would not, individually or in the aggregate, have a Material Adverse Effect (it being understood that my opinion
in this clause (B)(ii) does not extend to compliance with any financial ratio or any limitation in any contractual restriction
expressed as a dollar (or other currency) amount).</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;</P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">10.<FONT STYLE="font-family: Times New Roman, Times, Serif">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</FONT> <U>Accurate Disclosure</U>. The descriptions under the headings or subheadings &ldquo;Risk Factors,&rdquo; &ldquo;Business
and Properties,&rdquo; &ldquo;Black Hills Corporation&rdquo; and &ldquo;About Black Hills Corporation&rdquo; in or incorporated
by reference in the Registration Statement, the General Disclosure Package and the Final Prospectus of statutes, legal and governmental
proceedings, and contracts and other documents are accurate in all material respects and fairly present the information required
to be shown (it being understood that I express no opinion as to the content of the financial statements or the other financial
data or assessments of or reports on the effectiveness of internal control over financial reporting contained in the Registration
Statement, the General Disclosure Package, the Final Prospectus or the Form T-1).</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">11.<FONT STYLE="font-family: Times New Roman, Times, Serif">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</FONT><U>No Material Litigation</U>. Except as disclosed in the General Disclosure Package and the Final Prospectus, to my knowledge,
there are no pending actions, suits or proceedings (including any inquiries or investigations by any court or governmental agency
or any of its properties, which, in the aggregate, could reasonably be expected to result in a Material Adverse Effect on the Company
and its subsidiaries taken as a whole, or which would materially and adversely affect the ability of the Company to perform its
obligations under the Transaction Documents; and no such actions, suits or proceedings (including any inquiries or investigations
by any court or governmental agency or body) are, to my knowledge, threatened or contemplated.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: left; text-indent: 0.5in">In connection with
the preparation of the General Disclosure Package and the Final Prospectus, I, or other lawyers in the Company&rsquo;s legal department,
have participated in conferences with officers and other representatives of the Company and the independent public accountants
for the Company at which the contents of the same and related matters were discussed. On the basis of such participation and review,
but without independent verification by us of, and, other than with respect to opinion paragraph&nbsp;10, without assuming any
responsibility for, the accuracy, completeness or fairness of the statements contained in the General Disclosure Package and the
Final Prospectus, no facts have come to my attention that cause me to believe that (a) the General Disclosure Package (except for
the financial statements and financial schedules, oil and gas reserve reports and other financial or accounting data included or
incorporated by reference therein or omitted therefrom, as to which I make no statement) as of the date of the Underwriting Agreement
or as of the date hereof, contained or contains any untrue statement of a material fact or omitted or omits to state a material
fact necessary in order to make the statements therein, in light of the circumstances under which they were made, not misleading
or (b) the Final Prospectus (except for the financial statements and financial schedules, oil and gas reserve reports and other
financial or accounting data included or incorporated by reference therein or omitted therefrom, as to which I make no statement)
when issued contained, or as of the date hereof contains, any untrue statement of a material fact or omitted or omits to state
a material fact necessary in order to make the statements therein, in the light of the circumstances under which they were made,
not misleading.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">The opinions and views
expressed above are subject to the following limitations, qualifications, exceptions and assumptions:</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in"><FONT STYLE="font-family: Times New Roman, Times, Serif">(a)
</FONT>I have not relied upon, nor do I undertake for the purposes of this opinion the responsibility to review, the records of
any court or administrative or governmental body to determine the existence of any judicial or administrative proceeding, order,
decree, writ or judgment. As to all matters where I refer to &ldquo;my knowledge&rdquo; of the existence of any facts, situations
or instruments, such knowledge is based upon my actual knowledge, from whatever source obtained, and the information obtained by
me through specific inquiry of officers of the Company, including those officers who have responsibility for such information,
and examinations of agreements, contracts and records supplied to me by the Company, and I have not otherwise made, nor do I undertake
for the purpose of this opinion to make, any other inquiry or investigation to ascertain the existence of any other facts, situations
or instruments. In the course of such inquiries and examinations, I have not become aware of any facts which would have made me
unable to render any of the opinions expressed above.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in"><FONT STYLE="font-family: Times New Roman, Times, Serif">(b) </FONT>I
am a member of the bar of the State of South Dakota. My opinions expressed above are limited to the laws of the State of
South Dakota and the federal laws of the United States of America (but only with regard to the PUHCA, the Energy Policy Act,
the Federal Power Act and environmental laws), and I do not express any opinion herein concerning the laws of any other
jurisdiction. With respect to the opinions expressed in paragraph 2, I have assumed that the applicable law in each
Significant Subsidiary&rsquo;s jurisdiction of incorporation or organization, as the case may be, is the same as the
applicable law in the State of South Dakota in all relevant respects.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in"></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in"><FONT STYLE="font-family: Times New Roman, Times, Serif">(c)
</FONT>I have relied upon information, both oral and written, and copies of documents and records furnished to me by other employees
of the Company and others, and, for purposes of this opinion, I have assumed that all such information and copies are true, correct,
genuine and accurate and remain unchanged to the date hereof, and that all signatures are genuine, and none of said matters have
been independently verified by me. I have also assumed conformity to the originals of all documents submitted to me as copies.
I have also assumed that all parties to the Transaction Documents will act in accordance with, and will refrain from, taking any
action that is forbidden by, the terms and conditions of the Transaction Documents and the Offered Securities. I have also assumed
that, in the future, the Company will not take any discretionary action (including a decision not to act) that would result in
a violation of law or constitute a breach or default under any agreement, order or regulation and that the officers of the Company
will direct that the offering of the Offered Securities will be conducted in accordance with the limitations imposed by or pursuant
to the resolutions of the Company&rsquo;s board of directors from time to time.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in"><FONT STYLE="font-family: Times New Roman, Times, Serif">(d)
</FONT>This opinion letter is limited to the matters expressly stated herein, and no opinion is inferred or may be implied beyond
the matters expressly stated. This opinion letter expresses matters of professional judgment and does not constitute a guaranty
of any result. This opinion letter is predicated solely upon statutory and case law and facts in existence as of the date hereof.
I do not undertake to inform you of any changes in law or fact subsequent to the date hereof or facts of which I become aware after
the date hereof.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.25in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">I hereby authorize
the Trustee to rely upon opinion paragraphs 1, 2, 3 and 4 of this opinion letter as if they had been addressed to it.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center; text-indent: 0in">[<I>Signature Page Follows</I>]</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center; text-indent: 0in">&nbsp;</P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: left; text-indent: 0.5in">This letter and the
opinions expressed herein are being furnished solely for your information in connection with the Underwriting Agreement and may
not be used, circulated, quoted or relied upon for any other purpose without my prior written consent, except as expressly set
forth above with respect to the Trustee.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"></P>

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; width: 100%">
<TR STYLE="vertical-align: bottom">
    <TD STYLE="width: 50%">&nbsp;</TD>
    <TD STYLE="width: 50%; font: 10pt Times New Roman, Times, Serif">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom">
    <TD>&nbsp;</TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif">Very truly yours,</TD></TR>
<TR STYLE="vertical-align: bottom">
    <TD>&nbsp;</TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom">
    <TD>&nbsp;</TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif">Brian G. Iverson</TD></TR>
</TABLE>


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<DOCUMENT>
<TYPE>EX-4.1
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<DESCRIPTION>EXHIBIT 4.1
<TEXT>
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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: right"><B>Exhibit 4.1</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">BLACK HILLS CORPORATION</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">AND</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">WELLS FARGO BANK, NATIONAL ASSOCIATION</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">AS TRUSTEE</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">NINTH SUPPLEMENTAL INDENTURE</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">DATED AS OF</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><FONT STYLE="text-transform: uppercase">JUNE
17</FONT>, 2020</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">$400,000,000 2.500% NOTES DUE 2030</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>






<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">NINTH SUPPLEMENTAL INDENTURE dated as of June
17, 2020 (this &ldquo;<U>Supplemental Indenture</U>&rdquo;), to the Indenture dated as of May 21, 2003 (the &ldquo;<U>Base Indenture</U>&rdquo;
and, as supplemented by the First Supplemental Indenture dated as of May 21, 2003, the Second Supplemental Indenture dated as of
May 14, 2009, the Third Supplemental Indenture dated as of July 16, 2010, the Fourth Supplemental Indenture dated as of November&nbsp;19,
2013, the Fifth Supplemental Indenture dated as of January 13, 2016, the Sixth Supplemental Indenture dated as of August 19, 2016,
the Seventh Supplemental Indenture dated as of August 27, 2018, the Eighth Supplemental Indenture dated as of October 3, 2019 and
as further supplemented, amended or modified, the &ldquo;<U>Indenture</U>&rdquo;), by and between BLACK HILLS CORPORATION, a South
Dakota corporation (the &ldquo;<U>Company</U>&rdquo;), and WELLS FARGO BANK, NATIONAL ASSOCIATION, a national banking association
organized and existing under the laws of the United States of America (as successor to LaSalle Bank National Association), as trustee
(the &ldquo;<U>Trustee</U>&rdquo;).</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">Each party agrees as follows for the benefit
of the other party and for the equal and ratable benefit of the Holders of the Notes (as defined below):</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">WHEREAS, the Company and the Trustee have
duly authorized the execution and delivery of the Indenture to provide for the issuance from time to time of senior debt securities
(the &ldquo;<U>Securities</U>&rdquo;) to be issued in one or more series as in the Indenture provided;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">WHEREAS, the Company has appointed the Trustee
as successor trustee under the Indenture, and the Trustee has accepted such appointment, pursuant to the Agreement of Resignation,
Appointment and Acceptance dated as of February 17, 2009, among Bank of America, N.A. (as successor by merger to LaSalle Bank National
Association), the Trustee and the Company;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">WHEREAS, the Company desires and has requested
the Trustee to join the Company in the execution and delivery of this Supplemental Indenture in order to establish and provide
for the issuance by the Company of&nbsp;a series of Securities designated as its 2.500% Notes due 2030 in an initial aggregate
principal amount of $400,000,000, substantially in the form attached hereto as Exhibit&nbsp;A (the &ldquo;<U>Notes</U>&rdquo;)
on the terms set forth herein;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">WHEREAS, Section 3.1 of the Base Indenture
provides that a supplemental indenture may be entered into by the Company and the Trustee for such purpose provided certain conditions
are met;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">WHEREAS, the conditions set forth in the Indenture
for the execution and delivery of this Supplemental Indenture have been complied with; and</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">WHEREAS, all things necessary to make this
Supplemental Indenture a valid agreement of the Company and the Trustee, in accordance with its terms, and a valid amendment of,
and supplement to, the Indenture have been done;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">NOW, THEREFORE:</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">In consideration of the premises and the
purchase and acceptance of the Notes by the holders thereof, the Company covenants and agrees with the Trustee, for the equal
and ratable benefit of the Holders, that the Indenture is supplemented and amended, to the extent expressed herein, as
follows:</P>

<P STYLE="text-align: center; font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; text-align: center; margin-top: 0pt; margin-bottom: 0pt"></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; text-align: center; margin-top: 0pt; margin-bottom: 0pt">&nbsp;</P>

<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center; text-indent: 0in"><FONT STYLE="color: #010000">ARTICLE
I</FONT></P>

<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center; text-indent: 0in"><FONT STYLE="color: #010000">&nbsp;</FONT><BR>
Scope of Supplemental Indenture; General</P>

<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center; text-indent: 0in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">This Supplemental Indenture supplements and,
to the extent inconsistent therewith, replaces the provisions of the Indenture, to which provisions reference is hereby made.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">The changes, modifications and supplements
to the Indenture effected by this Supplemental Indenture shall be applicable only with respect to, and govern the terms of, the
Notes, which shall initially be in an aggregate principal amount of $400,000,000, the amount of which may be increased pursuant
to an Officers&rsquo; Certificate in accordance with this Supplemental Indenture, and shall not apply to any other Securities that
may be issued under the Indenture unless a supplemental indenture with respect to such other Securities specifically incorporates
such changes, modifications and supplements. Pursuant to this Supplemental Indenture, there is hereby created and designated a
series of Securities under the Indenture entitled &ldquo;2.500% Notes due 2030.&rdquo; The Notes shall be in the form of Exhibit&nbsp;A
hereto.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">In the event that the Company shall issue
and the Trustee shall authenticate any Notes issued under this Supplemental Indenture subsequent to the Issue Date (such Notes,
&ldquo;<U>Additional Securities</U>&rdquo;), the Company shall use its best efforts to obtain the same &ldquo;CUSIP&rdquo; number
for such Additional Securities as is printed on the Notes outstanding at such time; <U>provided</U>, <U>however</U>, that if any
Additional Securities issued under this Supplemental Indenture subsequent to the Issue Date are determined not to be fungible with
the Notes issued on the Issue Date for U.S. federal income tax purposes, the Company will obtain a &ldquo;CUSIP&rdquo; number for
such Additional Securities that is different than the &ldquo;CUSIP&rdquo; number printed on the Notes issued on the Issue Date.
If a different &ldquo;CUSIP&rdquo; number is obtained as contemplated herein, all Notes issued under this Supplemental Indenture
and Outstanding shall nonetheless vote and consent together on all matters as one series of Securities under the Indenture.</P>

<P STYLE="text-align: center; font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt">&nbsp;</P>

<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center; text-indent: 0in"><FONT STYLE="font-family: Times New Roman, Times, Serif; color: #010000">ARTICLE
II</FONT></P>

<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center; text-indent: 0in"><FONT STYLE="font-family: Times New Roman, Times, Serif; color: #010000">&nbsp;</FONT><BR>
Certain Definitions</P>

<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center; text-indent: 0in">&nbsp;</P>

<P STYLE="text-align: left; font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">The following terms have the meanings set
forth below in this Supplemental Indenture. Capitalized terms used but not defined herein have the meanings ascribed to such terms
in the Indenture. To the extent terms defined herein differ from the Indenture, the terms defined herein shall govern.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&ldquo;<U>Assets</U>&rdquo; of any Person
means the whole or any part of its business, property, assets, cash and receivables.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in"></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&ldquo;<U>Change of Control</U>&rdquo;
means the occurrence of any of the following: (i)&nbsp;the consummation of any transaction (including any merger or
consolidation) the result of which is that any person becomes the &ldquo;beneficial owner&rdquo; (as defined in
Rules&nbsp;13d-3 and 13d-5 under the Exchange Act) of shares representing more than 50% of the voting power of the then
outstanding Voting Stock of the Company or other Voting Stock into which the Voting Stock of the Company is reclassified,
consolidated, exchanged or changed, (ii)&nbsp;the direct or indirect sale, lease, transfer, conveyance or other disposition
(other than by way of merger or consolidation), in one or a series of related transactions, of all or substantially all of
the assets of the Company and the Subsidiaries taken as a whole to any person other than the Company or one of the
Subsidiaries, (iii)&nbsp;the merger or consolidation of the Company with or into any person or the merger or consolidation of
any person with or into the Company, in any such event pursuant to a transaction in which any of the outstanding shares of
the Voting Stock of the Company or the Voting Stock of such other person is converted into or exchanged for cash, securities
or other property, other than any such transaction in which the shares of Voting Stock of the Company outstanding immediately
prior to such transaction constitute, or are converted into or exchanged for, shares representing more than 50% of the voting
power of the Voting Stock of the resulting or surviving person or any direct or indirect parent company of the resulting or
surviving person immediately after giving effect to such transaction, or (iv)&nbsp;the adoption of a plan providing for the
liquidation or dissolution of the Company. Notwithstanding the foregoing, a transaction will not be deemed to involve a
Change of Control under clause&nbsp;(i) above if (a) the Company becomes a direct or indirect wholly owned subsidiary of a
holding company and (b)(x)&nbsp;the direct or indirect holders of the Voting Stock of such holding company immediately
following such transaction are substantially the same as the holders of the Company&rsquo;s Voting Stock immediately prior to
such transaction or (y) immediately following such transaction no person (other than a holding company satisfying the
requirements of this sentence) is the beneficial owner, directly or indirectly, of shares representing more than 50% of the
voting power of the Voting Stock of such holding company. The term &ldquo;person,&rdquo; as used in this definition, has the
meaning given thereto in Section&nbsp;13(d)(3) of the Exchange Act.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&ldquo;<U>Change of Control Offer</U>&rdquo;
has the meaning specified in Section 4.2.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&ldquo;<U>Change of Control Payment</U>&rdquo;
has the meaning specified in Section 4.2.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&ldquo;<U>Change of Control Payment Date</U>&rdquo;
has the meaning specified in Section&nbsp;4.2.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&ldquo;<U>Change of Control Triggering Event</U>&rdquo;
means the occurrence of both a Change of Control and a Rating Event.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&ldquo;<U>Comparable Treasury Issue</U>&rdquo;
means the United States Treasury security selected by the Quotation Agent as having an actual or interpolated maturity comparable
to the remaining term from the Redemption Date to the stated maturity date of the Notes to be redeemed that would be utilized,
at the time of selection and in accordance with customary financial practice, in pricing new issues of corporate debt securities
of comparable maturity to the remaining term of the Notes to be redeemed (assuming, for this purpose, such Notes mature on the
Par Call Date).</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&ldquo;<U>Comparable Treasury
Price</U>&rdquo; means with respect to any Redemption Date for the Notes, (1) the average of the Reference Treasury Dealer
Quotations for such Redemption Date, after excluding the highest and lowest such Reference Treasury Dealer Quotations,
(2)&nbsp;if fewer than four such Reference Treasury Dealer Quotations are obtained, the average of all such Reference
Treasury Dealer Quotations, or (3)&nbsp;if only one Reference Treasury Dealer Quotation is obtained, such Reference Treasury
Dealer Quotation, in each case determined by the Quotation Agent.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&ldquo;<U>Consolidated Capitalization</U>&rdquo;
means, as of any date of determination, the sum obtained by adding (i) Consolidated Shareholders&rsquo; Equity; (ii)&nbsp;Consolidated
Indebtedness (exclusive of any that is due and payable within one year of the date such sum is determined); and, without duplication,
(iii)&nbsp;any preference or preferred stock of the Company or any Consolidated Subsidiary that is subject to mandatory redemption
or sinking fund provisions.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&ldquo;<U>Consolidated Indebtedness</U>&rdquo;
means, as of any date of determination, total indebtedness as shown on the consolidated balance sheet of the Company and the Consolidated
Subsidiaries.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&ldquo;<U>Consolidated Shareholders&rsquo;
Equity</U>&rdquo; means, as of any date of determination, the total Assets of the Company and the Consolidated Subsidiaries less
all liabilities of the Company and its Consolidated Subsidiaries that would, in accordance with generally accepted accounting principles
in the United States (as in effect on the date of this Supplemental Indenture), be classified on a balance sheet as liabilities,
including (i) indebtedness secured by property of the Company or any of the Consolidated Subsidiaries whether or not the Company
or such Consolidated Subsidiary is liable for the payment of such indebtedness unless, in the case that the Company or such Consolidated
Subsidiary is not so liable, such property has not been included among the Assets of the Company or such Consolidated Subsidiary
on such balance sheet, (ii) deferred liabilities and (iii) indebtedness of the Company or any of the Consolidated Subsidiaries
that is expressly subordinated in right and priority of payment to other liabilities of the Company or such Consolidated Subsidiary.
As used in this definition, &ldquo;liabilities&rdquo; includes preference or preferred stock of the Company or any Consolidated
Subsidiary only to the extent of any such preference or preferred stock that is subject to mandatory redemption or sinking fund
provisions.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&ldquo;<U>Consolidated Subsidiary</U>&rdquo;
means, at any date, any Subsidiary the financial statements of which under generally accepted accounting principles in the United
States (as in effect on the date of this Supplemental Indenture) would be consolidated with those of the Company in its consolidated
financial statements as of such date.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&ldquo;<U>DTC</U>&rdquo; means The Depository
Trust Company.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&ldquo;<U>Event of Default</U>&rdquo; has
the meaning specified in Section 5.1.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&ldquo;<U>Fitch</U>&rdquo; means Fitch Ratings,
Inc., and its successors.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&ldquo;<U>Holder</U>&rdquo; means the Person
in whose name a Note is registered in the books of the Security Registrar for the Notes.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&ldquo;<U>Indebtedness</U>&rdquo; means
(i) all indebtedness, whether or not represented by bonds, debentures, notes or other securities, incurred, created or
assumed by the Company or any Subsidiary for the repayment of money borrowed, (ii) all indebtedness for money borrowed
secured by a lien upon property owned by the Company or any Subsidiary, regardless of whether the Company or such Subsidiary
has assumed or otherwise become liable for the payment of such indebtedness for money borrowed, and (iii) all indebtedness of
others for money borrowed that is guaranteed as to payment of principal or interest by the Company or any Subsidiary or in
effect guaranteed by the Company or such Subsidiary through a contingent agreement to purchase such indebtedness or through
any &ldquo;keep-well&rdquo; or similar agreement to be directly or indirectly liable for the repayment of such
indebtedness.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="text-align: left; font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&ldquo;<U>Investment Grade Rating</U>&rdquo;
means a rating equal to or higher than BBB- (or the equivalent) by Fitch, Baa3 (or the equivalent) by Moody&rsquo;s and BBB- (or
the equivalent) by S&amp;P, and the equivalent investment grade credit rating from any replacement rating agency or agencies selected
by the Company.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&ldquo;<U>Issue Date</U>&rdquo; means the
date on which the Notes are originally issued under this Supplemental Indenture.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&ldquo;<U>Moody&rsquo;s</U>&rdquo; means Moody&rsquo;s
Investors Service, Inc., and its successors.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&ldquo;<U>Par Call Date</U>&rdquo; means March
15, 2030.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&ldquo;<U>Primary Treasury Dealer</U>&rdquo;
has the meaning assigned to such term in the definition of Reference Treasury Dealer.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&ldquo;<U>Quotation Agent</U>&rdquo; means
one of the Reference Treasury Dealers selected by the Company.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&ldquo;<U>Rating Agencies</U>&rdquo; means
(i) each of Fitch, Moody&rsquo;s and S&amp;P and (ii) if any two or more of Fitch, Moody&rsquo;s or S&amp;P ceases to rate the
Notes or fails to make a rating of the Notes publicly available for reasons outside of the Company&rsquo;s control, a &ldquo;nationally
recognized statistical rating organization&rdquo; within the meaning of Section&nbsp;3(a)(62) of the Exchange Act, selected by
the Company (as certified by a Board Resolution) as a replacement agency for Fitch, Moody&rsquo;s or S&amp;P, as the case may be.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&ldquo;<U>Rating Event</U>&rdquo; means the
rating of the Notes is lowered by at least two of the Rating Agencies and the Notes are rated below an Investment Grade Rating
by at least two of the Rating Agencies, on any day during the period (which period will be extended so long as the rating of the
Notes is under publicly announced consideration for a possible downgrade by any of the Rating Agencies) commencing 60&nbsp;days
prior to the first public notice of the occurrence of a Change of Control or the intention of the Company to effect a Change of
Control and ending 60 days following the consummation of such Change of Control.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&ldquo;<U>Reference Treasury Dealer</U>&rdquo;
means each of (i)&nbsp;Wells Fargo Securities, LLC, J.P.&nbsp;Morgan Securities, LLC and RBC Capital Markets, LLC or their respective
affiliates or successors which are primary U.S. Government securities dealers in the United States (a &ldquo;<U>Primary Treasury
Dealer</U>&rdquo;) and (ii)&nbsp;three other Primary Treasury Dealers appointed by the Company at the time of any redemption; provided,
however, that if any of the foregoing or their affiliates or successors shall cease to be a Primary Treasury Dealer, the Company
shall substitute therefor another Primary Treasury Dealer.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in"></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in"></P>




<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&ldquo;<U>Reference Treasury Dealer Quotations</U>&rdquo;
means, with respect to each Reference Treasury Dealer and any Redemption Date, the average, as determined by the Quotation Agent,
of the bid and asked prices for the Comparable Treasury Issue, expressed in each case as a percentage of its principal amount,
quoted in writing to the Quotation Agent by such Reference Treasury Dealer at 5:00 p.m., New York City time, on the third Business
Day preceding such Redemption Date.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&ldquo;<U>S&amp;P</U>&rdquo; means S&amp;P
Global Ratings, a division of S&amp;P Global Inc., and its successors.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&ldquo;<U>Subsidiary</U>&rdquo; means a corporation,
limited partnership, limited liability company or trust in which more than 50% of the outstanding Voting Stock is owned, directly
or indirectly, by the Company and/or by one or more other Subsidiaries.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&ldquo;<U>Treasury Rate</U>&rdquo; means,
with respect to any Redemption Date, the rate per annum equal to the semi-annual equivalent yield to maturity or interpolated yield
to maturity (on a day count basis) of the Comparable Treasury Issue, assuming a price for the Comparable Treasury Issue (expressed
as a percentage of its principal amount) equal to the Comparable Treasury Price for such Redemption Date.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&ldquo;<U>Voting Stock</U>&rdquo; means, with
respect to any specified &ldquo;person&rdquo; (as that term is used in Section&nbsp;13(d)(3) of the Exchange Act) as of any date,
stock, partnership interests or any other participations, rights, warrants, options or other interests in the nature of an equity
interest that ordinarily (without regard to the occurrence of any contingency) has voting power for the election of directors,
managers or trustees of such person, whether at all times or only so long as no senior class of stock has that voting power by
reason of any contingency.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&ldquo;<U>Trustee</U>&rdquo; means the party
named as such above until a successor replaces such party in accordance with the applicable provisions of the Indenture and thereafter
means the successor serving hereunder.</P>

<P STYLE="text-align: center; font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt">&nbsp;</P>

<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center; text-indent: 0in"><FONT STYLE="font-family: Times New Roman, Times, Serif; color: #010000">ARTICLE
III</FONT></P>

<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center; text-indent: 0in">&nbsp;<BR>
The Notes</P>

<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center; text-indent: 0in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in"><FONT STYLE="color: #010000">Section 3.1<FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</FONT></FONT><U>Payments of Principal and Interest</U>.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">The Notes shall bear interest from and including
June 17, 2020, to but excluding the date of Maturity, at the rate of 2.500% per annum. The Notes shall mature at 100% of their
principal amount on June 15, 2030. The Company shall pay interest on the Notes semi-annually on June 15 and December 15 of each
year, commencing December 15, 2020, to the Person in whose name any such Note or any predecessor Note is registered in the Security
Register at the close of business on the last day of the month preceding such Interest Payment Date.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">The Company initially authorizes the Trustee
to act as Paying Agent and Security Registrar for the Notes.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in"></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&nbsp;</P>

<P STYLE="color: #010000; font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">Section 3.2<FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</FONT><U>Optional Redemption.</U></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">Subject to the provisions of Article XI of
the Base Indenture, the Notes shall be redeemable at the option of the Company, in whole or in part at any time and from time to
time, (i) prior to the Par Call Date, at a Redemption Price equal to the greater of (a) 100% of the principal amount of the Notes
to be redeemed plus accrued and unpaid interest (if any) to but excluding the Redemption Date and (b) the sum, as determined by
the Quotation Agent, of the present values of the principal amount of the Notes to be redeemed, together with remaining scheduled
payments of interest (exclusive of accrued and unpaid interest (if any) to but excluding the Redemption Date) from the Redemption
Date to the Par Call Date, in each case discounted to the Redemption Date on a semi-annual basis, assuming a 360-day year consisting
of twelve 30-day months, at the Treasury Rate plus 30 basis points, plus accrued and unpaid interest (if any) on the principal
amount of the Notes being redeemed to but excluding the Redemption Date and (ii)&nbsp;on or after the Par Call Date, at a Redemption
Price equal to 100% of the principal amount of the Notes being redeemed, plus accrued and unpaid interest on the Notes being redeemed
to but excluding the Redemption Date.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">If the Company elects to redeem all or any
part of the Notes, the Company will mail by first-class mail or deliver in accordance with DTC procedures a notice of redemption
to each Holder of the Notes to be redeemed (with a copy to the Trustee) at least 15 days before the Redemption Date. To the extent
that the Trustee shall deliver such notice, the Company will deliver such notice to the Trustee at least 30 days prior to the Redemption
Date or such shorter period as may be reasonably acceptable to the Trustee. If the exact Redemption Price is not known at the time
of the mailing or delivery of such notice of redemption, then such notice of redemption need not specify the exact Redemption Price
and, instead, may describe how the Redemption Price will be calculated. In that case, the Company will notify the Trustee of the
Redemption Price with respect to any redemption promptly after the calculation, and the Trustee will not be responsible for such
calculation.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in"><FONT STYLE="color: #010000">Section 3.3<FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</FONT></FONT><U>No Sinking Fund</U>.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">The Notes shall not be entitled to the benefit
of any sinking fund.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in"><FONT STYLE="color: #010000">Section 3.4<FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</FONT></FONT><U>Book Entry, Delivery and Form</U>.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">The Notes shall initially be issued in the
form of one or more Global Securities (the &ldquo;<U>Global Notes</U>&rdquo;). The Global Notes shall initially be deposited on
or about the Issue Date with, or on behalf of, DTC (the &ldquo;<U>Depositary</U>&rdquo;) and registered in the name of Cede &amp;
Co., as nominee of the Depositary.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in"><FONT STYLE="color: #010000">Section 3.5<FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</FONT></FONT><U>Form of Legend for Global Note</U>.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">In addition to the legend set forth in Section
2.2 of the Base Indenture, every Global Note authenticated and delivered hereunder shall bear a legend substantially in the following
form:</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">UNLESS THIS CERTIFICATE IS PRESENTED BY
AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY, A NEW YORK CORPORATION (&ldquo;<U>DTC</U>&rdquo;), TO THE
COMPANY OR ITS AGENT FOR REGISTRATION OF TRANSFER, EXCHANGE OR PAYMENT, AND ANY CERTIFICATE ISSUED IS REGISTERED IN THE NAME
OF CEDE &amp; CO. OR IN SUCH OTHER NAME AS IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF DTC (AND ANY PAYMENT IS MADE TO
CEDE &amp; CO. OR TO SUCH OTHER ENTITY AS IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF DTC), ANY TRANSFER, PLEDGE OR OTHER
USE HEREOF FOR VALUE OR OTHERWISE BY OR TO ANY PERSON IS WRONGFUL INASMUCH AS THE REGISTERED OWNER HEREOF, CEDE &amp; CO.,
HAS AN INTEREST HEREIN.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"></P>

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<P STYLE="text-align: center; font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in"><FONT STYLE="color: #010000">Section 3.6<FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</FONT></FONT><U>Defeasance</U>.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">Article&nbsp;XIII, including Sections 13.2
and 13.3, of the Base Indenture shall apply to the Notes.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in"><FONT STYLE="color: #010000">Section 3.7<FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</FONT></FONT><U>No Additional Amounts</U>.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">The Company will not pay any additional amounts
on the Notes to compensate any beneficial owner for any United States tax withheld from payments on the Notes.</P>

<P STYLE="text-align: center; font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt">&nbsp;</P>

<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center; text-indent: 0in"><FONT STYLE="font-family: Times New Roman, Times, Serif; color: #010000">ARTICLE
IV</FONT></P>

<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center; text-indent: 0in"><FONT STYLE="font-family: Times New Roman, Times, Serif; color: #010000">&nbsp;</FONT><BR>
Covenants</P>

<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center; text-indent: 0in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in"><FONT STYLE="color: #010000">Section 4.1<FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</FONT></FONT><U>Limitations on Liens</U>.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">So long as any Notes are Outstanding, neither
the Company nor any Subsidiary shall mortgage, pledge, grant a security interest in or hypothecate, or permit any mortgage, pledge,
security interest, lien or other encumbrance upon, any capital stock of any Subsidiary now or hereafter owned directly or indirectly
by the Company or any Subsidiary, to secure any Indebtedness without concurrently making effective provision whereby the Outstanding
Notes shall (so long as such other Indebtedness shall be so secured) be equally and ratably secured with any and all such other
Indebtedness and any other indebtedness similarly entitled to be equally and ratably secured; <U>provided</U>, <U>however</U>,
that this restriction shall not apply to, or prevent the creation of:</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1in; text-indent: 0.5in"><FONT STYLE="color: #010000">(1)<FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</FONT></FONT>any mortgage, pledge, security interest, lien or encumbrance existing on the Issue Date;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1in; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1in; text-indent: 0.5in"><FONT STYLE="color: #010000">(2)<FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</FONT></FONT>any mortgage, pledge, security interest, lien or encumbrance upon any capital stock created at the time of the acquisition
of such capital stock by the Company or any Subsidiary or within one year after such time to secure all or a portion of the purchase
price for such capital stock;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1in; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1in; text-indent: 0.5in"><FONT STYLE="color: #010000">(3)<FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </FONT></FONT>any
mortgage, pledge, security interest, lien or encumbrance upon any capital stock existing thereon at the time of the
acquisition of such capital stock by the Company or any Subsidiary, whether or not the obligations secured thereby are
assumed by the Company or such Subsidiary, other than any mortgage, pledge, security interest, lien or encumbrance created in
connection with or in anticipation of such acquisition not for the purpose of securing the purchase price for such capital
stock;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1in"></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1in; text-indent: 0.5in"><FONT STYLE="color: #010000">(4)<FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</FONT></FONT>any mortgage, pledge, security interest, lien or encumbrance upon any capital stock to secure or provide for the
acquisition, construction, improvement, expansion or development of property by the Company or any Subsidiary; <U>provided</U>
that such mortgage, pledge, security interest, lien or encumbrance may not extend to or cover any other property of the Company
or any Subsidiary that is not the subject of the related financing;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1in; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1in; text-indent: 0.5in"><FONT STYLE="color: #010000">(5)<FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</FONT></FONT>any mortgage, pledge, security interest, lien or encumbrance upon any limited liability company interest of Black
Hills Wyoming, LLC (or any of its direct or indirect Subsidiaries); provided that such mortgage, pledge, security interest, lien
or encumbrance may not extend to or cover any other property of the Company or any Subsidiary that is not the subject of such refinancing;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1in; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1in; text-indent: 0.5in"><FONT STYLE="color: #010000">(6)<FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</FONT></FONT>so long as no additional property of the Company or any Subsidiary is encumbered or made subject to a mortgage,
pledge, security interest, lien or other encumbrance, any mortgage, pledge, security interest, lien or encumbrance granted in
connection with (a) extending, renewing, replacing or refinancing in whole or in part the Indebtedness secured by any mortgage,
pledge, security interest, lien or encumbrance described in the foregoing clauses&nbsp;(1) through (5) or (b) any transaction
or series of related transactions involving separate projects pursuant to which any of the mortgages, pledges, security interests,
liens or encumbrances described in the foregoing clauses&nbsp;(1) through (5) are combined or aggregated; <U>provided</U>, that,
for purposes of this subclause&nbsp;(b), all of the Indebtedness secured by such mortgages, pledges, security interests, liens
or encumbrances immediately prior to such transaction or series of related transactions is repaid in connection therewith; <U>provided</U>&nbsp;<U>further</U>,
that, for purposes of this subclause (b), the aggregate amount of Indebtedness secured by such combined or aggregated mortgages,
pledges, security interests, liens or other encumbrances does not exceed the sum of (x) the aggregate amount of extended, renewed,
replaced or refinanced Indebtedness secured by such mortgages, pledges, security interests, liens or encumbrances outstanding
immediately prior to such transaction or series of related transactions and (y) 5% of Consolidated Capitalization, less the total
amount of all Indebtedness then outstanding that has been incurred and secured pursuant to this subclause (y) in any prior, separate
transactions or series of related transactions;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1in; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1in; text-indent: 0.5in"><FONT STYLE="color: #010000">(7)<FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </FONT></FONT>any
mortgage, pledge, security interest, lien or encumbrance upon any capital stock now or hereafter owned by the Company or any
Subsidiary to secure any Indebtedness, which would otherwise be subject to the foregoing restriction and not otherwise
permitted under any of the foregoing clauses (1) through (6), in an aggregate principal amount which, together with the
amount of all other such Indebtedness then outstanding that has been incurred and secured under this clause (7), does not at
the time of the creation of such mortgage, pledge, security interest, lien or encumbrance exceed 5% of Consolidated
Capitalization; or</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1in"></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1in; text-indent: 0.5in"><FONT STYLE="color: #010000">(8)<FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</FONT></FONT>any judgment, levy, execution, attachment or other similar lien arising in connection with court proceedings, <U>provided</U>
that:</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1in; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1.5in; text-indent: 0.5in"><FONT STYLE="color: #010000">(a)<FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</FONT></FONT>the execution or enforcement of each such lien is effectively stayed within 60 days after entry of the corresponding
judgment (or the corresponding judgment has been discharged within such 60-day period) and the claims secured thereby are being
contested in good faith by appropriate proceedings timely commenced and diligently prosecuted;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1.5in; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1.5in; text-indent: 0.5in"><FONT STYLE="color: #010000">(b)<FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</FONT></FONT>the payment of each such lien is covered in full by insurance provided by a third party and the insurance company
has not denied or contested coverage thereof; or</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1.5in; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1.5in; text-indent: 0.5in"><FONT STYLE="color: #010000">(c)<FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</FONT></FONT>each such lien is adequately bonded within 60 days of the creation of such lien.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1.5in; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">In case the Company shall propose to mortgage,
pledge, grant a security interest in or hypothecate any capital stock of any Subsidiary owned directly or indirectly by the Company
or any Subsidiary to secure any Indebtedness, other than as permitted by clauses (1) to (7), inclusive, of this Section 4.1, the
Company shall prior thereto give written notice thereof to the Trustee, and the Company shall prior to or simultaneously with such
mortgage, pledge, grant of security interest or hypothecation, by supplemental indenture executed by the Company and the Trustee
(or to the extent legally necessary by another trustee or an additional or separate trustee), in form satisfactory to the Trustee,
effectively secure (for so long as such other Indebtedness shall be so secured) all the Outstanding Notes equally and ratably with
such Indebtedness and with any other indebtedness similarly entitled to be equally and ratably secured.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in"><FONT STYLE="color: #010000">Section 4.2<FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</FONT></FONT><U>Change of Control</U>.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">If a Change of Control Triggering Event occurs
with respect to the Notes, each Holder of the Notes shall have the right to require the Company to repurchase all or any part (equal
to $2,000 or an integral multiple of $1,000 in excess thereof) of such Holder&rsquo;s Notes pursuant to the offer described below
(a &ldquo;<U>Change of Control Offer</U>&rdquo;) on the terms set forth in this Section&nbsp;4.2. In a Change of Control Offer,
the Company shall offer payment in cash equal to 101% of the aggregate principal amount of Notes repurchased, plus accrued and
unpaid interest (if any) on the Notes repurchased, to but excluding the date of repurchase (the &ldquo;<U>Change of Control Payment</U>&rdquo;),
subject to the right of Holders of record on the relevant Record Date to receive interest on the corresponding Interest Payment
Date.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">Within 30 days following any Change of
Control Triggering Event (unless the Company has previously mailed or delivered a redemption notice with respect to all
Outstanding Notes pursuant to Section&nbsp;3.2 of this Supplemental Indenture) or, at the option of the Company, prior to any
Change of Control Triggering Event but after public announcement of the transaction or transactions that constitute or may
constitute the Change of Control, the Company shall mail by first-class mail or deliver in accordance with DTC procedures a
notice to each Holder of the Notes (with a copy to the Trustee), which notice shall:</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1in; text-indent: 0.5in"><FONT STYLE="color: #010000">(1)<FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</FONT></FONT>describe the circumstances and relevant facts regarding the Change of Control Triggering Event;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1in; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1in; text-indent: 0.5in"></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1in; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1in; text-indent: 0.5in"><FONT STYLE="color: #010000">(2)<FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</FONT></FONT>offer to repurchase the Notes on the date specified in the notice, which date shall be no earlier than 30 days and
no later than 60 days following the date such notice is mailed or delivered (the &ldquo;<U>Change of Control Payment Date</U>&rdquo;),
pursuant to the procedures required by the Indenture and described in such notice, which offer will constitute the Change of Control
Offer; and</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1in; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1in; text-indent: 0.5in"><FONT STYLE="color: #010000">(3)<FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</FONT></FONT>if mailed or delivered prior to the date on which the Change of Control Triggering Event occurs, state that the Change
of Control Offer is conditioned on the Change of Control Triggering Event occurring on or prior to the applicable Change of Control
Payment Date.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1in; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">On the Change of Control Payment Date, the
Company shall, to the extent lawful:</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1in; text-indent: 0.5in"><FONT STYLE="color: #010000">(1)<FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</FONT></FONT>accept for payment all Notes or portions of Notes properly tendered pursuant to the applicable Change of Control
Offer;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1in; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1in; text-indent: 0.5in"><FONT STYLE="color: #010000">(2)<FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</FONT></FONT>deposit with the Paying Agent an amount equal to the applicable Change of Control Payment in respect of all Notes
or portions of Notes properly tendered; and</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1in; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1in; text-indent: 0.5in"><FONT STYLE="color: #010000">(3)<FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</FONT></FONT>deliver or cause to be delivered to the Trustee the Notes properly accepted together with an Officers&rsquo; Certificate
stating the aggregate principal amount of Notes or portions of Notes being repurchased.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1in; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">Holders electing to have any Notes repurchased
shall be required to surrender the Notes, with an appropriate form duly completed, to the Company at the address specified in the
notice at least three Business Days prior to the Change of Control Payment Date. Holders shall be entitled to withdraw their election
if the Trustee or the Company receives, not later than one Business Day prior to the Change of Control Payment Date, a written
notice (including by facsimile or other electronic transmission) setting forth the name of the Holder, the principal amount of
the Notes which were delivered for purchase by the Holder and a statement that such Holder is withdrawing its election to have
such Notes purchased.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">On the Change of Control Payment Date, all
Notes purchased by the Company under this Section&nbsp;4.2 shall be delivered by the Company to the Trustee for cancellation, and
the Company shall pay the Change of Control Payment to the Holders entitled thereto.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">Notwithstanding the foregoing provisions
of this Section&nbsp;4.2, the Company shall not be required to make a Change of Control Offer upon the occurrence of a Change
of Control Triggering Event if a third party makes a Change of Control Offer in the manner, at the times and otherwise in
compliance with the requirements for a Change of Control Offer made by the Company and the third party purchases all Notes
properly tendered and not withdrawn under such Change of Control Offer.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">The Company shall comply with the requirements
of Rule&nbsp;14e-1 under the Exchange Act and any other securities laws and regulations to the extent such laws and regulations
are applicable in connection with the repurchase of the Notes as a result of a Change of Control Triggering Event. To the extent
that the provisions of any securities laws or regulations conflict with the provisions of this Section&nbsp;4.2, the Company shall
comply with the applicable securities laws and regulations. The Company shall not be deemed to have breached its obligations under
this Section&nbsp;4.2 by virtue of such compliance.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">Notwithstanding anything to the contrary contained
in the Indenture, the Trustee may enter into a supplemental indenture for the purpose of waiving or modifying the provisions of
this Section&nbsp;4.2 with respect to the Notes with the written consent of the Holders of a majority in principal amount of the
Outstanding Notes.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&nbsp;</P>

<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; color: #010000">ARTICLE
V</FONT></P>

<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; color: #010000">&nbsp;</FONT><BR>
Remedies</P>

<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in"><FONT STYLE="color: #010000">Section 5.1<FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</FONT></FONT><U>Events of Default</U>.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&ldquo;<U>Event of Default</U>&rdquo; means,
with respect to any Note, any one or more of the following events (whatever the reason for such Event of Default and whether it
shall be voluntary or involuntary or be effected by operation of law or pursuant to any judgment, decree or order of any court
or any order, rule or regulation of any administrative or governmental body):</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1.5in; text-indent: 0.5in"><FONT STYLE="color: #010000">(a)<FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</FONT></FONT>default in the payment of the principal of such Note at its Maturity, or any Change of Control Payment with respect
to such Note on any Change of Control Payment Date;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1.5in; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1.5in; text-indent: 0.5in"><FONT STYLE="color: #010000">(b)<FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</FONT></FONT>default in the payment of any interest upon such Note when it becomes due and payable, and continuance of such default
for a period of 30 days;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1.5in; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1.5in; text-indent: 0.5in"><FONT STYLE="color: #010000">(c)<FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </FONT></FONT>default
in the performance, or breach, of any covenant or warranty of the Company in this Supplemental Indenture or the Indenture
(other than a covenant or warranty a default in whose performance or whose breach is elsewhere in this Section&nbsp;5.1
specifically addressed or which has expressly been included in the Indenture solely for the benefit of one or more series of
Securities other than the Notes), and continuance of such default or breach for a period of 60 days after there has been
given, by registered or certified mail, to the Company by the Trustee or to the Company and the Trustee by the Holders of at
least 25% in principal amount of the Outstanding Notes a written notice specifying such default or breach and requiring it to
be remedied and stating that such notice is a &ldquo;Notice of Default&rdquo; hereunder (without giving effect to any
applicable grace period with respect to such covenant or warranty);</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1.5in"></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1.5in; text-indent: 0.5in"><FONT STYLE="color: #010000">(d)<FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</FONT></FONT>the entry by a court having jurisdiction in the premises of (i)&nbsp;a decree or order for relief in respect of the
Company in an involuntary case or proceeding under any applicable Federal or State bankruptcy, insolvency, reorganization or other
similar law or (ii)&nbsp;a decree or order adjudging the Company a bankrupt or insolvent, or approving as properly filed a petition
seeking reorganization, arrangement, adjustment or composition of or in respect of the Company under any applicable Federal or
State law, or appointing a custodian, receiver, liquidator, assignee, trustee, sequestrator or other similar official of the Company
or of any substantial part of its property, or ordering the winding up or liquidation of its affairs, and the continuance of any
such decree or order for relief or any such other decree or order unstayed and in effect for a period of 90 consecutive days; or</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1.5in; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1.5in; text-indent: 0.5in"><FONT STYLE="color: #010000">(e)<FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</FONT></FONT>the commencement by the Company of a voluntary case or proceeding under any applicable Federal or State bankruptcy,
insolvency, reorganization or other similar law or of any other case or proceeding to be adjudicated a bankrupt or insolvent, or
the consent by it to the entry of a decree or order for relief in respect of the Company in an involuntary case or proceeding under
any applicable Federal or State bankruptcy, insolvency, reorganization or other similar law or to the commencement of any bankruptcy
or insolvency case or proceeding against it, or the filing by it of a petition or answer or consent seeking reorganization or relief
under any applicable Federal or State law, or the consent by it to the filing of such petition or to the appointment of or taking
possession by a custodian, receiver, liquidator, assignee, trustee, sequestrator or other similar official of the Company or of
any substantial part of its property, or the making by it of an assignment for the benefit of creditors, or the admission by it
in writing of its inability to pay its debts generally as they become due, or the taking of corporate action by the Company in
furtherance of any such action.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1.5in; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">References to Section 5.1(5) and 5.1(6) in Section&nbsp;5.2
of the Base Indenture shall, for purposes of the Notes, be amended to refer to Sections&nbsp;5.1(d) and 5.1(e) above.</P>

<P STYLE="text-align: center; font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt">&nbsp;</P>

<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center; text-indent: 0in"><FONT STYLE="font-family: Times New Roman, Times, Serif; color: #010000">ARTICLE
VI</FONT></P>

<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center; text-indent: 0in"><FONT STYLE="font-family: Times New Roman, Times, Serif; color: #010000">&nbsp;</FONT><BR>
Miscellaneous</P>

<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center; text-indent: 0in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in"><FONT STYLE="color: #010000">Section 6.1<FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</FONT></FONT><U>Governing Law</U>.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">This Supplemental Indenture and the Notes
shall be governed by and construed in accordance with the laws of the State of New York, without giving effect to such State&rsquo;s
conflicts of laws principles.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in"></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&nbsp;</P>

<P STYLE="color: #010000; font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">Section 6.2<FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</FONT><U>Ratification of Indenture.</U></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">Except as expressly modified or amended hereby,
the Indenture continues in full force and effect and is in all respects confirmed, ratified and preserved.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in"><FONT STYLE="color: #010000">Section 6.3<FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</FONT></FONT><U>Trustee</U>.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">The Trustee makes no representations as to
the validity or sufficiency of this Supplemental Indenture. The statements and recitals herein are deemed to be those of the Company
and not of the Trustee.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">Delivery of reports, information and documents
to the Trustee with respect to the Notes pursuant to the Indenture is for informational purposes only and its receipt of such reports
shall not constitute constructive notice of any information contained therein or determinable from information contained therein,
including the Company&rsquo;s compliance with any of the Company&rsquo;s covenants contained in the Indenture or the Notes (as
to which the Trustee is entitled to rely exclusively on Officers&rsquo; Certificates). The Trustee shall not be obligated to monitor
or confirm, on a continuing basis or otherwise, the Company&rsquo;s compliance with the covenants contained in the Indenture or
with respect to any reports or other documents filed with the Securities and Exchange Commission.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in"><FONT STYLE="color: #010000">Section 6.4<FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</FONT></FONT><U>Counterparts</U>.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">This Supplemental Indenture may be executed
in any number of counterparts, each of which shall be an original, but such counterparts shall together constitute one and the
same instrument.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in"><FONT STYLE="color: #010000">Section 6.5<FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</FONT></FONT><U>Separability</U>.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">In case any provision in this Supplemental
Indenture or in the Notes shall be invalid, illegal or unenforceable, the validity, legality or enforceability of the remaining
provisions shall not in any way be affected or impaired thereby.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in"><FONT STYLE="color: #010000">Section 6.6<FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</FONT></FONT><U>Cancellation</U>.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">All Notes surrendered for payment, redemption,
registration of transfer or exchange shall, if surrendered to any Person other than the Trustee, be delivered to the Trustee and
shall be promptly canceled by the Trustee in accordance with the Trustee&rsquo;s customary procedures. The Company may at any time
deliver to the Trustee for cancellation any Notes previously authenticated and delivered hereunder which the Company may have acquired
in any manner whatsoever, and may deliver to the Trustee (or to any other Person for delivery to the Trustee) for cancellation
any Notes previously authenticated hereunder which the Company has not issued and sold, and all Notes so delivered shall be promptly
canceled by the Trustee in accordance with the Trustee&rsquo;s customary procedures. No Notes shall be authenticated in lieu of
or in exchange for any Notes canceled as provided in this Section, except as expressly permitted by the Indenture. Evidence of
the destruction of any cancelled Notes shall be delivered to the Company upon its written request.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in"></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&nbsp;</P>

<P STYLE="color: #010000; font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">Section 6.7<FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</FONT><U>Force Majeure.</U></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">In no event shall the Trustee be responsible
or liable for any failure or delay in the performance of its obligations with respect to the Notes arising out of or caused by,
directly or indirectly, forces beyond its control, including, without limitation, strikes, work stoppages, accidents, acts of war
or terrorism, civil or military disturbances, nuclear or natural catastrophes or acts of God, and interruptions, loss or malfunctions
of utilities, communications or computer (software and hardware) services; it being understood that the Trustee shall undertake
commercially reasonable efforts to resume performance as soon as practicable under the circumstances.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in"><FONT STYLE="color: #010000">Section 6.8<FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</FONT></FONT><U>U.S.A. Patriot Act</U>.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">The Company acknowledges that in accordance
with the Customer Identification Program (CIP) requirements under the U.S.A. PATRIOT Act and its implementing regulations, the
Trustee in order to help fight the funding of terrorism and money laundering, is required to obtain, verify, and record information
that identifies each person or legal entity that establishes a relationship or opens an account with the Trustee. The Company hereby
agrees that it shall provide the Trustee with such information as the Trustee may request including, but not limited to, the Company&rsquo;s
name, physical address, tax identification number and other information that will help the Trustee identify and verify the Company&rsquo;s
identity such as organizational documents, certificate of good standing, license to do business, or other pertinent identifying
information.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in"><FONT STYLE="color: #010000">Section 6.9<FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</FONT></FONT><U>Jury Waiver</U>.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">Each of the Company and the Trustee irrevocably
waives, to the fullest extent permitted by applicable law, any and all right to trial by jury in any legal proceeding arising out
of or relating to the Indenture, this Supplemental Indenture and the Notes, or the transactions contemplated thereby.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in"></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">IN WITNESS WHEREOF, the parties have
caused this Supplemental Indenture to be duly executed, all as of the date first above written.</P>

<P STYLE="text-align: center; font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif; border-collapse: collapse">
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD COLSPAN="3"><FONT STYLE="font: 10pt Times New Roman, Times, Serif">BLACK HILLS CORPORATION</FONT></TD>
    </TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD COLSPAN="2">&nbsp;</TD>
    <TD>&nbsp;</TD>
    </TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">By:&nbsp; </FONT></TD>
    <TD COLSPAN="2" STYLE="border-bottom: Black 1pt solid"><FONT STYLE="font: 10pt Times New Roman, Times, Serif">/s/ Richard W. Kinzley</FONT></TD>
    </TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="width: 50%">&nbsp;</TD>
    <TD STYLE="width: 3%">&nbsp;</TD>
    <TD STYLE="width: 5%"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Name:</FONT>&nbsp;</TD>
    <TD STYLE="width: 42%"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Richard W. Kinzley</FONT></TD>
    </TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Title: </FONT></TD>
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Senior Vice President and Chief Financial Officer</FONT></TD>
    </TR>
</TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; text-align: center; margin-top: 0pt; margin-bottom: 0pt">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; text-align: center; margin-top: 0pt; margin-bottom: 0pt"><I>Signature Page
to Ninth Supplemental Indenture</I></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; text-align: center; margin-top: 0pt; margin-bottom: 0pt">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; text-align: center; margin-top: 0pt; margin-bottom: 0pt"></P>

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    <DIV STYLE="page-break-before: always; margin-top: 6pt; margin-bottom: 12pt"><P STYLE="margin: 0pt">&nbsp;</P></DIV>
    <!-- Field: /Page -->

<P STYLE="font: 10pt Times New Roman, Times, Serif; text-align: center; margin-top: 0pt; margin-bottom: 0pt">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif; border-collapse: collapse">
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD COLSPAN="3"><FONT STYLE="font: 10pt Times New Roman, Times, Serif">WELLS FARGO BANK, NATIONAL ASSOCIATION, as Trustee</FONT></TD>
    </TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD COLSPAN="2">&nbsp;</TD>
    <TD>&nbsp;</TD>
    </TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">By:&nbsp;</FONT></TD>
    <TD COLSPAN="2" STYLE="border-bottom: Black 1pt solid"><FONT STYLE="font: 10pt Times New Roman, Times, Serif">/s/ Patrick T. Giordano</FONT></TD>
    </TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="width: 50%">&nbsp;</TD>
    <TD STYLE="width: 3%">&nbsp;</TD>
    <TD STYLE="width: 5%"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Name:</FONT></TD>
    <TD STYLE="width: 42%"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Patrick T. Giordano</FONT></TD>
    </TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Title:</FONT></TD>
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Vice President</FONT></TD>
    </TR>
</TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; text-align: center; margin-top: 0pt; margin-bottom: 0pt">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; text-align: center; margin-top: 0pt; margin-bottom: 0pt"><I>Signature Page
to Ninth Supplemental Indenture</I></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; text-align: center; margin-top: 0pt; margin-bottom: 0pt">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; text-align: center; margin-top: 0pt; margin-bottom: 0pt"></P>

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    <DIV STYLE="page-break-before: always; margin-top: 6pt; margin-bottom: 12pt"><P STYLE="margin: 0pt">&nbsp;</P></DIV>
    <!-- Field: /Page -->

<P STYLE="font: 10pt Times New Roman, Times, Serif; text-align: center; margin-top: 0pt; margin-bottom: 0pt">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; text-align: right; margin-top: 0pt; margin-bottom: 0pt">EXHIBIT A</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; text-align: center; margin-top: 0pt; margin-bottom: 0pt">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; text-align: center; margin-top: 0pt; margin-bottom: 0pt">FORM OF NOTE</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">[Face of Security]</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">[If this Security is a Global Note, insert:
THIS SECURITY IS A GLOBAL SECURITY WITHIN THE MEANING OF THE INDENTURE HEREINAFTER REFERRED TO AND IS REGISTERED IN THE NAME OF
A DEPOSITARY OR A NOMINEE THEREOF. THIS SECURITY MAY NOT BE EXCHANGED IN WHOLE OR IN PART FOR A SECURITY REGISTERED, AND NO TRANSFER
OF THIS SECURITY IN WHOLE OR IN PART MAY BE REGISTERED, IN THE NAME OF ANY PERSON OTHER THAN SUCH DEPOSITARY OR A NOMINEE THEREOF,
EXCEPT IN THE LIMITED CIRCUMSTANCES DESCRIBED IN THE INDENTURE.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">UNLESS THIS CERTIFICATE IS PRESENTED BY AN
AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY, A NEW YORK CORPORATION (&ldquo;<U>DTC</U>&rdquo;), TO THE COMPANY OR
ITS AGENT FOR REGISTRATION OF TRANSFER, EXCHANGE OR PAYMENT, AND ANY CERTIFICATE ISSUED IS REGISTERED IN THE NAME OF CEDE &amp;
CO. OR IN SUCH OTHER NAME AS IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF DTC (AND ANY PAYMENT IS MADE TO CEDE &amp; CO. OR
TO SUCH OTHER ENTITY AS IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF DTC), ANY TRANSFER, PLEDGE OR OTHER USE HEREOF FOR VALUE
OR OTHERWISE BY OR TO ANY PERSON IS WRONGFUL INASMUCH AS THE REGISTERED OWNER HEREOF, CEDE &amp; CO., HAS AN INTEREST HEREIN.]</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in"></P>

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    <DIV STYLE="page-break-before: always; margin-top: 6pt; margin-bottom: 12pt"><P STYLE="margin: 0pt">&nbsp;</P></DIV>
    <!-- Field: /Page -->

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in"></P>




<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: right">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: right">CUSIP No.: 092113AT6</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: right">ISIN No.: US092113AT65</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif; border-collapse: collapse">
<TR STYLE="vertical-align: top">
    <TD STYLE="width: 50%; font-size: 10pt"><FONT STYLE="font-size: 10pt">No. _____</FONT></TD>
    <TD STYLE="text-align: right; width: 50%; font-size: 10pt"><FONT STYLE="font-size: 10pt">$___________</FONT></TD></TR>
</TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">2.500% Notes due 2030</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">BLACK HILLS CORPORATION</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">BLACK HILLS CORPORATION, a South Dakota corporation
(the &ldquo;<U>Company</U>&rdquo;), for value received, hereby promises to pay to ____________ or registered assigns the principal
sum of _________ DOLLARS on June 15 , 2030 (the &ldquo;<U>Stated Maturity Date</U>&rdquo;), unless earlier redeemed at the option
of the Company as provided herein, and to pay interest thereon from June 17, 2020, or from the most recent Interest Payment Date
to which interest has been paid or duly provided for, semi-annually on June 15 and December 15 in each year (each, an &ldquo;<U>Interest
Payment Date</U>&rdquo;), commencing December 15, 2020, at the rate of 2.500% per annum, until the principal hereof is paid or
duly provided for. All capitalized terms used herein and not otherwise defined shall have the meanings ascribed to them in the
Indenture referred to the reverse of this Security.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">The interest payable, and punctually paid
or duly provided for, on any Interest Payment Date will, as provided in such Indenture, be paid to the Holder in whose name this
Security (or one or more Predecessor Securities) is registered at the close of business on the last day of the month (whether or
not a Business Day) preceding such Interest Payment Date at the office or agency of the Company maintained for such purpose. Interest
will be computed on the basis of a 360-day year of twelve 30-day months. Any such interest not so punctually paid or duly provided
for shall forthwith cease to be payable to the Holder on such Regular Record Date, and may be paid to the Holder in whose name
this Security (or one or more Predecessor Securities) is registered at the close of business on a Special Record Date for the payment
of such Defaulted Interest to be fixed by the Trustee, notice whereof shall be given to Holders of Securities of this series not
less than 10 days prior to such Special Record Date, or may be paid at any time in any other lawful manner not inconsistent with
the requirements of any securities exchange on which the Securities of this series may be listed, and upon such notice as may be
required by such exchange, all as more fully provided in the Indenture.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">The principal of this Security payable on
the Stated Maturity Date, or the Redemption Price payable on a Redemption Date, if any, or the Change of Control Payment payable
on a Change of Control Payment Date, if any, will be paid against presentation of this Security at the office or agency of the
Company maintained for that purpose in Minneapolis, Minnesota, in such coin or currency of the United States of America as at the
time of payment is legal tender for the payment of public and private debts.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in"></P>

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    <DIV STYLE="page-break-before: always; margin-top: 6pt; margin-bottom: 12pt"><P STYLE="margin: 0pt">&nbsp;</P></DIV>
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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">Interest payable on this Security on any
Interest Payment Date and on the Stated Maturity Date or any Redemption Date or any Change of Control Payment Date, as the
case may be, will include interest accrued from and including the next preceding Interest Payment Date in respect of which
interest has been paid or duly provided for (or from and including June 17, 2020, if no interest has been paid on this
Security) to but excluding such Interest Payment Date or the Stated Maturity Date or Redemption Date or Change of Control
Payment Date, as the case may be. If any Interest Payment Date or the Stated Maturity Date or any Redemption Date or any
Change of Control Payment Date falls on a day that is not a Business Day, the payment due on such date will be paid on the
next succeeding Business Day with the same force and effect as if it were paid on the date such payment was due, and no
interest shall accrue on the amount so payable for the period from and after the date such payment was due.
&ldquo;<U>Business Day</U>&rdquo; means each Monday, Tuesday, Wednesday, Thursday or Friday which is not a day on which
banking institutions in New York, New York, are authorized or obligated by law or executive order to close.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">[If this Security is a Global Note, insert:
All payments due in respect of this Security will be made by the Company in immediately available funds.]</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">Reference is hereby made to the further provisions
of this Security set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set
forth at this place.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">Unless the Certificate of Authentication hereon
has been executed by the Trustee by manual signature of one of its authorized signatories, this Security shall not be entitled
to any benefit under the Indenture, or be valid or obligatory for any purpose.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in"></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">IN WITNESS WHEREOF, the Company has
caused this instrument to be duly executed.</P>

<P STYLE="text-align: center; font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif; border-collapse: collapse">
<TR STYLE="vertical-align: top">
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Dated:</FONT></TD>
    <TD COLSPAN="2">&nbsp;</TD>
    </TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD COLSPAN="2">&nbsp;</TD>
    </TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD COLSPAN="2"><FONT STYLE="font: 10pt Times New Roman, Times, Serif">BLACK HILLS CORPORATION</FONT></TD>
    </TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD COLSPAN="2">&nbsp;</TD>
    </TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">By:&nbsp; </FONT></TD>
    <TD STYLE="border-bottom: Black 1pt solid">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
    </TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="width: 50%">&nbsp;</TD>
    <TD STYLE="width: 3%">&nbsp;</TD>
    <TD STYLE="width: 47%"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Name:&nbsp;&nbsp;</FONT></TD>
    </TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Title:</FONT></TD>
    </TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
<TR STYLE="font: 10pt Times New Roman, Times, Serif; vertical-align: top">
    <TD COLSPAN="2" STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font: 10pt Times New Roman, Times, Serif">Attest:</FONT></TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif">&nbsp;</TD>
    </TR>
<TR STYLE="font: 10pt Times New Roman, Times, Serif; vertical-align: top">
    <TD STYLE="font: 10pt Times New Roman, Times, Serif; width: 3%">&nbsp;</TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif; width: 47%">&nbsp;</TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif; width: 50%">&nbsp;</TD>
    </TR>
<TR STYLE="font: 10pt Times New Roman, Times, Serif; vertical-align: top">
    <TD STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">By:</FONT>&nbsp;</TD>
    <TD STYLE="border-bottom: Black 1pt solid; font: 10pt Times New Roman, Times, Serif">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&#8239;</TD>
    </TR>
<TR STYLE="font: 10pt Times New Roman, Times, Serif; vertical-align: top">
    <TD STYLE="font: 10pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font: 10pt Times New Roman, Times, Serif">Name:</FONT></TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif">&nbsp;</TD>
    </TR>
<TR STYLE="font: 10pt Times New Roman, Times, Serif; vertical-align: top">
    <TD STYLE="font: 10pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font: 10pt Times New Roman, Times, Serif">Title:</FONT></TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif">&nbsp;</TD>
    </TR>
</TABLE>
<P STYLE="text-align: center; font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; text-align: center; margin-top: 0pt; margin-bottom: 0pt"></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; text-align: center; margin-top: 0pt; margin-bottom: 0pt">&nbsp;</P>




<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">TRUSTEE&rsquo;S CERTIFICATE OF AUTHENTICATION</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">This is one of the Securities of the series
designated herein referred to in the within-mentioned Indenture.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">WELLS FARGO BANK, NATIONAL ASSOCIATION, as
Trustee</P>

<P STYLE="text-align: center; font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif; border-collapse: collapse">
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD COLSPAN="2"><P STYLE="font: 10pt Times New Roman, Times, Serif; text-indent: 0; margin: 0pt 0">WELLS FARGO BANK, NATIONAL ASSOCIATION, as Trustee</P>

</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="width: 50%">&nbsp;</TD>
    <TD STYLE="width: 3%">&nbsp;</TD>
    <TD STYLE="width: 47%">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding-bottom: 1pt">&nbsp;</TD>
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">By: &nbsp;</FONT></TD>
    <TD STYLE="border-bottom: Black 1pt solid">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD><FONT STYLE="font: 10pt Times New Roman, Times, Serif">Name:</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD><FONT STYLE="font: 10pt Times New Roman, Times, Serif">Title:</FONT></TD></TR>
</TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; text-align: center; margin-top: 0pt; margin-bottom: 0pt">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; text-align: center; margin-top: 0pt; margin-bottom: 0pt"></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; text-align: center; margin-top: 0pt; margin-bottom: 0pt">&nbsp;</P>

<P STYLE="text-align: center; font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt">[Reverse of Security]</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">BLACK HILLS CORPORATION</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">2.500% Notes due 2030</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">This Security is one of a duly authorized
issue of securities of the Company (herein called the &ldquo;<U>Securities</U>&rdquo;), issued and to be issued in one or more
series under an Indenture dated as of May 21, 2003 (the &ldquo;<U>Base Indenture</U>&rdquo;), as supplemented by the First Supplemental
Indenture dated as of May&nbsp;21, 2003, the Second Supplemental Indenture dated as of May 14, 2009, the Third Supplemental Indenture
dated as of July 16, 2010, the Fourth Supplemental Indenture dated as of November&nbsp;19, 2013, the Fifth Supplemental Indenture
dated as of January&nbsp;13, 2016, the Sixth Supplemental Indenture dated as of August 19, 2016, the Seventh Supplemental Indenture
dated as of August 17, 2018, the Eighth Supplemental Indenture dated as of October 3, 2019 and the Ninth Supplemental Indenture
dated as of June 17, 2020 (as so supplemented, herein called the &ldquo;<U>Indenture</U>&rdquo;), each between the Company and
Wells Fargo Bank, National Association ( as successor to LaSalle Bank National Association), as trustee (herein called the &ldquo;<U>Trustee</U>,&rdquo;
which term includes any successor trustee under the Indenture with respect to the series of which this Security is a part), to
which Indenture and all indentures supplemental thereto reference is hereby made for a statement of the respective rights, limitations
of rights, duties and immunities thereunder of the Company, the Trustee and the Holders of the Securities, and of the terms upon
which the Securities are, and are to be, authenticated and delivered. The aggregate principal amount of the Securities of this
series to be issued is initially limited to $400,000,000 (except for Securities authenticated and delivered upon transfer of, or
in exchange for, or in lieu of other Securities), which amount may be increased pursuant to an Officers&rsquo; Certificate in accordance
with the Ninth Supplemental Indenture referred to above. To the extent any provision of this Security conflicts with the express
provisions of the Base Indenture or the Ninth Supplemental Indenture thereto, the provisions of the Base Indenture or the Ninth
Supplemental Indenture thereto (as applicable) shall govern and be controlling.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">If an Event of Default, as defined in the
Indenture, with respect to the Securities of this series shall occur and be continuing, the principal of the Securities of this
series may be declared due and payable in the manner and with the effect provided in the Indenture.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">The Securities of this series are
subject to redemption, at the option of the Company, in whole or in part at any time and from time to time (i)&nbsp;prior to
March 15, 2030 at a redemption price equal to the greater of (a) 100% of the principal amount of the Securities of this
series to be redeemed plus accrued and unpaid interest (if any) to the Redemption Date and (b) the sum, as determined by the
Quotation Agent, of the present values of the principal amount of the Securities of this series to be redeemed, together with
remaining scheduled payments of interest (exclusive of accrued and unpaid interest (if any) to but excluding the Redemption
Date) from the Redemption Date to March 15, 2030, in each case discounted to the Redemption Date on a semi-annual basis,
assuming a 360-day year consisting of twelve 30-day months, at the Treasury Rate plus 30&nbsp;basis points, plus accrued and
unpaid interest (if any) on the principal amount of the Securities of this series being redeemed to but excluding the
Redemption Date, and (ii)&nbsp;on or after March 15, 2030, at a Redemption Price equal to 100% of the principal amount of the
Securities of this series to be redeemed plus accrued and unpaid interest (if any) to but excluding the Redemption Date.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">If the Company elects to redeem all or any
part of the Securities of this series, the Company will mail by first-class mail or deliver in accordance with DTC procedures a
notice of redemption to each Holder of the Securities to be redeemed (with a copy to the Trustee) at least 15 days before the Redemption
Date. To the extent that the Trustee shall deliver such notice, the Company will deliver such notice to Trustee at least 30 days
prior to the Redemption Date or such shorter period as may be reasonably acceptable to the Trustee.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">In the event of redemption of this Security
in part only, a new Security or Securities of this series for the unredeemed portion hereof shall be issued in the name of the
Holder hereof upon the cancellation hereof.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">If a Change of Control Triggering Event occurs
with respect to the Securities of this series, each Holder of the Securities of this series will have the right to require the
Company to repurchase all or any part (equal to $2,000 or an integral multiple of $1,000 in excess thereof) of such Holder&rsquo;s
Securities of this series in cash at a repurchase price equal to 101% of the aggregate principal amount of the Securities of this
series repurchased, plus accrued and unpaid interest (if any) on the Securities of this series repurchased, to but excluding the
date of repurchase, subject to the right of the Holders of record on the relevant Record Date to receive interest on the corresponding
Interest Payment Date, all as provided in the Indenture.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">Article XIII, including Sections 13.1 and
13.2, of the Base Indenture will apply to the Securities of this series.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">The Indenture permits, with certain exceptions
as therein provided, the amendment thereof and the modification of the rights and obligations of the Company and the rights of
the Holders of the Securities under the Indenture at any time by the Company and the Trustee with the consent of the Holders of
not less than a majority of the aggregate principal amount of each series of Securities issued under the Indenture at the time
Outstanding and affected thereby. The Indenture also contains provisions permitting the Holders of not less than a majority of
the aggregate principal amount of the Outstanding Securities of any series, on behalf of the Holders of all Securities of such
series, to waive compliance by the Company with certain provisions of the Indenture. Furthermore, provisions in the Indenture permit
the Holders of not less than a majority of the aggregate principal amount, in certain instances, of the Outstanding Securities
of any series to waive, on behalf of all of the Holders of Securities of such series, certain past defaults under the Indenture
and their consequences.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">No reference herein to the Indenture and no
provision of this Security or of the Indenture shall alter or impair the obligation of the Company, which is absolute and unconditional,
to pay the principal of (and the Redemption Price and Change of Control Payment, if any) and interest on this Security at the times,
places and rate, and in the coin or currency, herein prescribed.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in"></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">As provided in the Indenture and subject
to certain limitations therein set forth, the transfer of this Security is registrable in the Security Register of the
Company upon surrender of this Security for registration of transfer at the office or agency of the Company in any place
where the principal of (and the Redemption Price and Change of Control Payment, if any) and interest on this Security are
payable, duly endorsed by, or accompanied by a written instrument of transfer in form satisfactory to the Company and the
Security Registrar duly executed by, the Holder hereof or by his attorney duly authorized in writing, and thereupon one or
more new Securities, of authorized denominations and for the same aggregate principal amount, will be issued to the
designated transferee or transferees.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">As provided in the Indenture and subject to
certain limitations therein set forth, this Security is exchangeable for a like aggregate principal amount of Securities of different
authorized denominations but otherwise having the same terms and conditions, as requested by the Holder hereof surrendering the
same.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">No service charge shall be made for any such
registration of transfer or exchange, but the Company may require payment of a sum sufficient to cover any tax or other governmental
charge payable in connection therewith.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">Prior to due presentment of this Security
for registration of transfer, the Company, the Trustee and any agent of the Company or the Trustee may treat the Person in whose
name this Security is registered as the owner hereof for all purposes, whether or not this Security be overdue, and neither the
Company, the Trustee nor any such agent shall be affected by notice to the contrary.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">The Securities of this series are issuable
only in registered form without coupons in denominations of $2,000 and integral multiples of $1,000.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">No recourse shall be had for the payment of
the principal of or the Redemption Price or Change of Control Payment, if any, or the interest on this Security, or for any claim
based hereon, or otherwise in respect hereof, or based on or in respect of the Indenture or any indenture supplemental thereto,
against any incorporator, stockholder, employee, agent, officer, director or subsidiary, as such, past, present or future, of the
Company or of any successor corporation, either directly or through the Company or any successor corporation, whether by virtue
of any constitution, statute or rule of law or by the enforcement of any assessment or penalty or otherwise, all such liability
being, by the acceptance hereof and as part of the consideration for the issue hereof, expressly waived and released.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">The Securities and the Indenture shall be
governed by and construed in accordance with the laws of the State of New York, without giving effect to such State&rsquo;s conflicts
of laws principles.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in"></P>

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<P STYLE="text-align: center; font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt">&nbsp;</P>




<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>ASSIGNMENT FORM</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">To assign this Security, fill in the form below:</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">I or we assign and transfer this Security to</P>

<P STYLE="text-align: center; font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif; border-collapse: collapse">
<TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: Black 1pt solid; text-align: center; font-size: 10pt; width: 100%">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="font-size: 10pt">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="text-align: center; font-size: 10pt"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">(Insert assignee&rsquo;s soc. sec. or tax identification no.)</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="text-align: center; font-size: 10pt">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: Black 1pt solid; text-align: center; font-size: 10pt">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="text-align: center; font-size: 10pt">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: Black 1pt solid; text-align: center; font-size: 10pt">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="text-align: center; font-size: 10pt">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: Black 1pt solid; text-align: center; font-size: 10pt">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="text-align: center; font-size: 10pt"><FONT STYLE="font: 10pt Times New Roman, Times, Serif">(Print or type assignee&rsquo;s name, address and zip code)</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="font-size: 10pt"></TD></TR>
</TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; text-align: center; margin-top: 0pt; margin-bottom: 0pt">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">and irrevocably appoint ______________________________________
as agent to transfer this Security on the books of the Company. The agent may substitute another to act for him.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif; border-collapse: collapse">
<TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: Black 1pt solid; text-align: center; font-size: 10pt; width: 100%">&nbsp;</TD></TR>
</TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"></P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif; border-collapse: collapse">
<TR STYLE="vertical-align: top">
    <TD STYLE="text-align: left; font-size: 10pt; width: 5%">Date:</TD>
    <TD><U>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</U></TD></TR>
</TABLE>

<P STYLE="margin: 0">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif; border-collapse: collapse">
<TR STYLE="vertical-align: top">
    <TD STYLE="font-size: 10pt; width: 12%">Your Signature:</TD>
    <TD STYLE="border-bottom: Black 1pt solid; text-align: center; font-size: 10pt">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="font-size: 10pt">&nbsp;</TD>
    <TD STYLE="text-align: center; font-size: 10pt">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD COLSPAN="2" STYLE="font-size: 10pt">(Sign exactly as your name appears on the face of this Security)</TD></TR>
</TABLE>

<P STYLE="margin: 0">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif; border-collapse: collapse">
<TR STYLE="vertical-align: top">
    <TD STYLE="font-size: 10pt; width: 15%">Tax Identification No.:</TD>
    <TD STYLE="border-bottom: Black 1pt solid; text-align: center; font-size: 10pt">&nbsp;</TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif; border-collapse: collapse">
<TR STYLE="vertical-align: top">
    <TD COLSPAN="2"><FONT STYLE="font: 10pt Times New Roman, Times, Serif">Signature Guarantee by:</FONT></TD>
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD COLSPAN="2" STYLE="border-bottom: Black 1pt solid; text-align: center; font-size: 10pt">&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD COLSPAN="2" STYLE="text-align: center; font-size: 10pt">&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="width: 5%"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">By:</FONT></TD>
    <TD STYLE="border-bottom: Black 1pt solid; text-align: center; font-size: 10pt; width: 45%">&nbsp;</TD>
    <TD STYLE="width: 50%">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Name:</FONT></TD>
    <TD STYLE="border-bottom: Black 1pt solid; text-align: center; font-size: 10pt"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;</FONT></TD>
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Title: </FONT></TD>
    <TD STYLE="border-bottom: Black 1pt solid; text-align: center; font-size: 10pt"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;</FONT></TD>
    <TD>&nbsp;</TD></TR>
</TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Signatures must be guaranteed by an &ldquo;eligible guarantor
institution&rdquo; meeting the requirements of the Security Registrar, which requirements include membership or participation in
the Security Transfer Agent Medallion Program (&ldquo;<U>STAMP</U>&rdquo;) or such other &ldquo;signature guarantee program&rdquo;
as may be determined by the Security Registrar in addition to, or in substitution for, STAMP, all in accordance with the Securities
Exchange Act of 1934, as amended.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>


</BODY>
</HTML>
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</DOCUMENT>
<DOCUMENT>
<TYPE>EX-5.1
<SEQUENCE>4
<FILENAME>tm2022285d4_ex5-1.htm
<DESCRIPTION>EXHIBIT 5.1
<TEXT>
<HTML>
<HEAD>
     <TITLE></TITLE>
</HEAD>
<BODY STYLE="font: 10pt Times New Roman, Times, Serif">

<P STYLE="margin: 0">&nbsp;</P>

<P STYLE="text-align: right; margin: 0"><B>Exhibit 5.1</B></P>

<P STYLE="margin: 0">&nbsp;</P>

<P STYLE="margin: 0"><IMG SRC="tm2022285d4_ex5-1img001.jpg" ALT=""><FONT STYLE="font-size: 5pt">&nbsp;</FONT></P>

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; font: 10pt Times New Roman, Times, Serif; width: 100%">
<TR STYLE="vertical-align: top; text-align: left">
    <TD STYLE="width: 70%"><P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><B>Brian G. Iverson</B></P>
                           <P STYLE="margin-top: 0; margin-bottom: 0">Sr. Vice President and General Counsel P: 605.721.2511</P>
                           <P STYLE="margin-top: 0; margin-bottom: 0">&nbsp;</P>
                           <P STYLE="margin-top: 0; margin-bottom: 0">Brian.Iverson@blackhillscorp.com</P></TD>
    <TD STYLE="text-align: right; width: 30%"><P STYLE="margin-top: 0; margin-bottom: 0">7001 Mt. Rushmore Road</P>
                                              <P STYLE="margin-top: 0; margin-bottom: 0">Rapid City, SD 57702</P>
                                              <P STYLE="margin-top: 0; margin-bottom: 0">P: 605.721.2305</P>
                                              <P STYLE="margin-top: 0; margin-bottom: 0">F: 605.719.9967</P></TD></TR>
</TABLE>

<P STYLE="text-align: center; margin-top: 0; margin-bottom: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">June 17, 2020</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Black Hills Corporation</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">7001 Mount Rushmore Road</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Rapid City, South Dakota 57702</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Ladies and Gentlemen:</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: left; text-indent: 0.5in">I am Senior Vice President
and General Counsel of Black Hills Corporation, a South Dakota corporation (the &ldquo;<U>Company</U>&rdquo;), and I have acted
as counsel for the Company in connection with (i) the preparation of a Registration Statement on Form&nbsp;S-3 (File No.&nbsp;333-219705)
(the &ldquo;<U>Registration Statement</U>&rdquo;), with the Securities and Exchange Commission (the &ldquo;<U>Commission</U>&rdquo;)
under the Securities Act of 1933, as amended (the &ldquo;<U>Act</U>&rdquo;), and (ii)&nbsp;the Prospectus Supplement dated June
12, 2020 to the Prospectus dated August&nbsp;4, 2017 relating to the offer and sale by the Company under the Registration Statement
of $400,000,000 aggregate principal amount of its 2.500% Senior Notes due 2030 (the &ldquo;<U>Notes</U>&rdquo;).</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: left; text-indent: 0.5in">The Notes are to be
issued under an indenture dated as of May 21, 2003, between the Company and Wells Fargo Bank, National Association (as successor
to LaSalle Bank National Association), as Trustee (the &ldquo;<U>Base Indenture</U>&rdquo;), as supplemented by a first supplemental
indenture dated as of May 21, 2003, a second supplemental indenture dated as of May 14, 2009, a third supplemental indenture dated
as of July 16, 2010, a fourth supplemental indenture dated as of November 19, 2013, a fifth supplemental indenture dated as of
January 13, 2016, a sixth supplemental indenture dated as of August 19, 2016, a seventh supplemental indenture dated as of August
17, 2018, an eighth supplemental indenture dated as of October 3, 2019 and a ninth supplemental indenture dated as of the date
hereof (the &ldquo;<U>Supplemental Indenture</U>&rdquo; and, the Base Indenture as supplemented by such first, second, third, fourth,
fifth, sixth, seventh and eighth supplemental indentures and the Supplemental Indenture, the &ldquo;<U>Indenture</U>&rdquo;) and
sold pursuant to the Underwriting Agreement dated June 12, 2020 (the &ldquo;<U>Underwriting Agreement</U>&rdquo;) between the Company
and the Underwriters named therein. The Base Indenture, the Supplemental Indenture and the Underwriting Agreement are sometimes
referred to herein collectively as the &ldquo;<U>Transaction Documents</U>.&rdquo;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: left; text-indent: 0.5in">I have examined or
am otherwise familiar with the Registration Statement, the Transaction Documents, the Restated Articles of Incorporation of the
Company, as amended, and the Amended and Restated Bylaws of the Company and such other documents, records and instruments as I
have deemed necessary or appropriate for the purposes of the opinions set forth herein.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">Black Hills Corporation</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">June 17, 2020</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">Page 2</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: left; text-indent: 0.5in">Based upon and subject
to the foregoing and the qualifications set forth in Annex I attached hereto, I am of the opinion that the Notes have been duly
authorized and executed by the Company and, when authenticated in accordance with the provisions of the Indenture and delivered
to and paid for pursuant to the terms of the Underwriting Agreement, will be valid and binding obligations of the Company, enforceable
against the Company in accordance with their terms, subject to applicable bankruptcy, insolvency, fraudulent conveyance, reorganization,
moratorium and similar laws affecting creditors&rsquo; rights generally and equitable principles of general applicability (regardless
of whether considered in a proceeding in equity or at law).</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: left; text-indent: 0.5in">My opinions set forth
herein are limited to the laws of the States of South Dakota and New York and the federal laws of the United States of America
(the &ldquo;<U>Covered Laws</U>&rdquo;), and I express no opinion as to the effect of any other laws. The Notes are governed by
the laws of the State of New York. To the extent the opinions set forth herein relate to the laws of the State of New York, I have
relied, with their permission, as to all matters of New York law on the opinions of Faegre Drinker Biddle &amp; Reath&nbsp;LLP
dated the date hereof, which is filed herewith as Exhibit&nbsp;5.2 to a Current Report on Form 8-K of the Company filed with the
Commission and thereby incorporated by reference into the Registration Statement (the &ldquo;<U>Current Report</U>&rdquo;).</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: left; text-indent: 0.5in">I hereby consent to
the filing of this opinion as Exhibit 5.1 to the Current Report and thereby incorporated by reference into the Registration Statement
without implying or admitting that I am an &ldquo;expert&rdquo; within the meaning of the Act, or other rules and regulations of
the Commission issued thereunder with respect to any part of the Registration Statement, including this exhibit.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">[<I>Signature Page Follows</I>]</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 27.35pt"></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 27.35pt">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt; text-align: justify; text-indent: 0pt">Black Hills Corporation</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt; text-align: justify; text-indent: 0pt">June 17, 2020</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt; text-align: justify; text-indent: 0pt">Page 3</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 27.35pt">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; width: 100%">
<TR STYLE="vertical-align: bottom">
    <TD STYLE="width: 50%"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif; width: 50%; text-align: left"><FONT STYLE="font-size: 10pt">Very truly
    yours,</FONT></TD></TR>
<TR STYLE="vertical-align: bottom">
    <TD><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD></TR>
<TR STYLE="vertical-align: bottom">
    <TD><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD>
    <TD STYLE="border-bottom: Black 1pt solid; font: 10pt Times New Roman, Times, Serif; text-align: left"><FONT STYLE="font-size: 10pt">/s/ Brian G. Iverson</FONT></TD></TR>
<TR STYLE="vertical-align: bottom">
    <TD><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif; text-align: left"><FONT STYLE="font-size: 10pt">Brian G. Iverson, Senior
    Vice President and General Counsel</FONT></TD></TR>
</TABLE>


<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="text-align: center; font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><I>[Signature Page
to Exhibit 5.1 Opinion of In-House Counsel]</I></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="text-align: right; font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><B>Annex I</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: left; text-indent: 1in">In rendering the accompanying
opinion letter, I wish to advise you of the following additional qualifications to which such opinion letter is subject:</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-align: left; text-indent: 0.5in">(a)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;I
have relied upon representations made by the Company in the Transaction Documents, the assumptions set forth below as to the matters
referred therein, and upon certificates of, and information provided by, officers and employees of the Company reasonably believed
by me to be appropriate sources of information, as to the accuracy of such factual matters, in each case without independent verification
thereof or other investigation.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-align: justify; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-align: left; text-indent: 0.5in">(b)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;In
rendering opinions as to the Covered Laws, I have only considered the applicability of statutes, rules, regulations and judicial
decisions that a lawyer practicing in such jurisdiction (the &ldquo;<U>Opining Jurisdictions</U>&rdquo;) exercising customary professional
diligence would reasonably recognize as being directly applicable to the Company or the transactions contemplated by the Transaction
Documents.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-align: justify; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-align: left; text-indent: 0.5in">(c)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;I
express no opinion as to whether, or to the extent of which, the laws of any particular jurisdiction apply to the subject matter
hereof, including without limitation the enforceability of the governing law provision contained in the Transaction Documents,
except to the extent such provision would be enforceable based on Section&nbsp;5-1401 and 5-1402 of the General Obligations Law
of the State of New York.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-align: justify; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-align: left; text-indent: 0.5in">(d)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;I
have relied, without investigation, upon the following assumptions: (i)&nbsp;natural persons who are involved on behalf of the
Company have sufficient legal capacity to enter into and perform, on behalf of the Company, the transaction in question and to
carry out their role in the transaction; (ii)&nbsp;each Transaction Document and the Notes have been duly authorized, executed
and delivered by each party thereto (other than the Company); (iii)&nbsp;each party having rights under any Transaction Documents
or the Notes (other than the Company) has satisfied those legal requirements that are applicable to it to the extent necessary
to make the Transaction Documents enforceable against it and has complied with all legal requirements pertaining to its status
as such status relates to its rights to enforce the Transaction Documents and the Notes against it and the other parties; (iv)
each document submitted to me for review is accurate and complete, each such document that is an original is authentic, each such
document that is a copy conforms to an authentic original, and all signatures on each such document are genuine; (v)&nbsp;there
has not been any mutual mistake of fact or misunderstanding, fraud, duress or undue influence; (vi)&nbsp;all statutes, judicial
and administrative decisions, and rules and regulations of governmental agencies, constituting the Covered Laws, are publicly
available to lawyers practicing in the Opining Jurisdictions; (vii)&nbsp;all relevant statutes, rules, regulations or agency actions
are constitutional and valid unless a reported decision in the Opining Jurisdictions has specifically addressed but not resolved,
or has established, its unconstitutionality or invalidity; (viii)&nbsp;the Company will not in the future take any discretionary
action (including a decision not to act) permitted under the Transaction Documents or the Notes that would result in a violation
of law or constitute a breach or default under any other agreement, order or regulation; (ix)&nbsp;the Company will obtain all
permits and governmental approvals required in the future, and take all future actions similarly required, relevant to the performance
of the Transaction Documents and the Notes; and (x)&nbsp;all parties to the transaction will act in accordance with, and will
refrain from taking any action that is forbidden by, the terms and conditions of the Transaction Documents and the Notes.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-align: justify"></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-align: left; text-indent: 0.5in">(e)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;I
express no opinion as to the enforceability or effect in any Transaction Document of (i) any usury or fraudulent transfer, voidable
transaction or fraudulent conveyance &ldquo;savings&rdquo; provision; (ii)&nbsp;any agreement to submit to the jurisdiction of
any particular court or other governmental authority (either as to personal jurisdiction or subject matter jurisdiction), any waivers
of the right to jury trial, any waivers of service of process requirements that would otherwise be applicable, any agreement that
a judgment rendered by a court in one jurisdiction may be enforced in another jurisdiction, or any provision otherwise affecting
the jurisdiction or venue of courts; and (iii) any provision waiving legal, statutory or equitable defenses or other procedural,
judicial or administrative rights.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-align: justify; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-align: left; text-indent: 0.5in">(f)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The
opinions herein expressed are limited to the specific issues addressed and to facts and laws existing on the date hereof. In rendering
these opinions, I do not undertake to advise you with respect to any other matter or of any change in such facts and laws or in
the interpretation thereof which may occur after the date hereof.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-align: justify; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-align: left; text-indent: 0.5in">(g)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Without
limiting any other qualifications set forth herein, the opinions expressed in the accompanying opinion letter are subject to the
effect of generally applicable laws that (i) provide for the enforcement of oral waivers or modifications where a material change
of position in reliance thereon has occurred or provide that a course of performance may operate as a waiver; (ii)&nbsp;limit the
availability of a remedy under certain circumstances where another remedy has been elected; (iii)&nbsp;limit the enforceability
of provisions releasing, exculpating or exempting a party from, or requiring indemnification of a party for, liability for its
own action or inaction, to the extent the action or inaction involves negligence, recklessness, willful misconduct or unlawful
conduct; (iv)&nbsp;may, where less than all of a contract may be unenforceable, limit the enforceability of the balance of the
contract to circumstances in which the unenforceable portion is not an essential part of the agreed exchange; (v) govern and afford
judicial discretion regarding determination of damages and entitlement to attorneys&rsquo; fees and other costs; (vi)&nbsp;may
permit a party who has materially failed to render or offer performance required by a contract to cure that failure unless either
permitting a cure would unreasonably hinder the aggrieved party from making substitute arrangements for performance or it is important
under the circumstances to the aggrieved party that performance occur by the date stated in the contract; (vii) may limit the enforceability
of provisions imposing premiums or liquidated damages to the extent such provisions constitute, or are deemed to constitute, a
penalty or forfeiture and provisions imposing increased interest rates upon default, or providing for the compounding of interest
or the payment of interest on interest; (viii)&nbsp;may limit the amount payable under the Notes upon an acceleration to the extent
that a portion of the amount so payable is considered by a court to be unearned interest; (ix) may require mitigation of damages;
and (x)&nbsp;provide a time limitation after which rights may not be enforced (i.e., statutes of limitation).</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-align: justify; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-align: justify; text-indent: 0.5in"></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-align: left; text-indent: 0.5in">(h)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The
opinions expressed herein do not address any of the following legal issues: (i)&nbsp;federal securities laws and regulations, (ii)
state securities laws and regulations, and laws and regulations relating to commodity (and other) futures and indices and other
similar instruments; (iii) margin regulations of the Board of Governors of the Federal Reserve System; (iv)&nbsp;federal and state
tax laws and regulations; (v)&nbsp;the statutes and ordinances, administrative decisions and the rules and regulations of counties,
towns, municipalities and special political subdivisions (whether created or enabled through legislative action at the federal,
state or regional level) and judicial decisions to the extent that they deal with the foregoing; (vi)&nbsp;voidable transaction,
fraudulent transfer and fraudulent conveyance laws; and (vii) laws, regulations, directives and executive orders restricting transactions
with or freezing or otherwise controlling assets of designated foreign persons or governing investments by foreign persons in the
United&nbsp;States.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-align: justify; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-align: justify; text-indent: 0.5in"></P>

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    <!-- Field: /Page -->

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</DOCUMENT>
<DOCUMENT>
<TYPE>EX-5.2
<SEQUENCE>5
<FILENAME>tm2022285d4_ex5-2.htm
<DESCRIPTION>EXHIBIT 5.2
<TEXT>
<HTML>
<HEAD>
     <TITLE></TITLE>
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<BODY STYLE="font: 10pt Times New Roman, Times, Serif">

<P STYLE="margin: 0">&nbsp;</P>

<P STYLE="text-align: right; margin-top: 0; margin-bottom: 0"><B>Exhibit 5.2</B></P>

<P STYLE="margin: 0">&nbsp;</P>

<P STYLE="text-align: center; margin-top: 0; margin-bottom: 0"><IMG SRC="tm2022285d4ex5-2img_001.jpg" ALT=""></P>

<P STYLE="margin: 0">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif; border-collapse: collapse">
<TR STYLE="vertical-align: top">
    <TD STYLE="width: 60%; padding-right: 5.4pt; padding-bottom: 12pt; padding-left: 5.4pt; font-size: 10pt"><P STYLE="margin-top: 0; margin-bottom: 0"></P>
                                                                                <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><B>Brandon C. Mason</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Partner</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">brandon.mason@faegredrinker.com</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">+1
612 766 7108</FONT> direct</P>

</TD>
    <TD STYLE="width: 40%; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 18pt; text-align: left"><P STYLE="text-align: left; font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-family: Times New Roman, Times, Serif"><B>Faegre
Drinker Biddle &amp; Reath </B></FONT><B>LLP</B></P>

<P STYLE="text-align: left; font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">2200 Wells Fargo Center<BR>
90 South Seventh Street<BR>
Minneapolis, Minnesota 55402</P>

<P STYLE="text-align: left; font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">+1
612 766 7000</FONT> main</P>

<P STYLE="text-align: left; font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">+1
612 766 1600</FONT> fax</P></TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">June 17, 2020</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Brian G. Iverson</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Senior Vice President &ndash; General Counsel</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Black Hills Corporation</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">7001 Mount Rushmore Road</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Rapid City, South Dakota 57702</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Mr. Iverson:</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: left; text-indent: 0.5in">You have acted as counsel
to Black Hills Corporation, a South Dakota corporation (the &ldquo;<U>Company</U>&rdquo;), in connection with (i) the preparation
of a Registration Statement on Form&nbsp;S-3 (File No.&nbsp;333-219705) (the &ldquo;<U>Registration Statement</U>&rdquo;), with
the Securities and Exchange Commission (the &ldquo;<U>Commission</U>&rdquo;) under the Securities Act of 1933, as amended (the
&ldquo;<U>Act</U>&rdquo;), and (ii)&nbsp;the Prospectus Supplement dated June 12, 2020 to the Prospectus dated August&nbsp;4, 2017
relating to the offer and sale by the Company under the Registration Statement of $400,000,000 aggregate principal amount of its
2.500% Senior Notes due 2030 (the &ldquo;<U>Notes</U>&rdquo;). As such counsel, you are furnishing an opinion in accordance with
the requirements of Item 601(b)(5) of Regulation S-K under the Act. In connection with such opinion, you have asked us to opine
with respect to certain matters under New York law.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: left; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: left; text-indent: 0.5in">The Notes are to be
issued under an indenture dated as of May 21, 2003, between the Company and Wells Fargo Bank, National Association (as successor
to LaSalle Bank National Association), as Trustee (the &ldquo;<U>Base Indenture</U>&rdquo;), as supplemented by a first supplemental
indenture dated as of May 21, 2003, a second supplemental indenture dated as of May 14, 2009, a third supplemental indenture dated
as of July 16, 2010, a fourth supplemental indenture dated as of November 19, 2013, a fifth supplemental indenture dated as of
January 13, 2016, a sixth supplemental indenture dated as of August 19, 2016, a seventh supplemental indenture dated as of August
17, 2018, an eighth supplemental indenture dated as of October 3, 2019 and a ninth supplemental indenture dated as of the date
hereof (the &ldquo;<U>Supplemental Indenture</U>&rdquo; and, the Base Indenture as supplemented by such Supplemental Indenture,
the &ldquo;<U>Indenture</U>&rdquo;) and sold pursuant to the Underwriting Agreement dated June 12, 2020 (the &ldquo;<U>Underwriting
Agreement</U>&rdquo;) by and among the Company and the Underwriters named therein. The Indenture, the Underwriting Agreement and
the Notes are sometimes referred to herein collectively as the &ldquo;<U>Transaction Documents</U>.&rdquo;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: left; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: left; text-indent: 0.5in">We have examined the
Registration Statement, the Base Prospectus, the Prospectus Supplement, the Transaction Documents, and such other documents, records
and instruments as we have deemed necessary or appropriate for the purposes of the opinions set forth herein.</P>




<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Brian G. Iverson, Esq.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Black Hills Corporation</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">June 17&cedil;2020</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Page
</FONT>2</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: left; text-indent: 0.5in">Based upon and subject
to the foregoing and the qualifications set forth in Annex I attached hereto, we are of the opinion that the Notes, when authenticated
in accordance with the provisions of the Indenture and delivered to and paid for pursuant to the terms of the Underwriting Agreement,
will be valid and binding obligations of the Company, enforceable against the Company in accordance with their terms, subject to
applicable bankruptcy, insolvency, voidable transactions, fraudulent conveyance, reorganization, moratorium and similar laws affecting
creditors&rsquo; rights generally and equitable principles of general applicability (regardless of whether considered in a proceeding
in equity or at law).</P>

<P STYLE="text-align: left; font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: left; text-indent: 0.5in">We hereby consent to
the filing of this opinion as Exhibit&nbsp;5.2 to a Current Report on Form&nbsp;8-K of the Company filed with the Commission and
thereby incorporated by reference into the Registration Statement and to the reference to use under the heading &ldquo;Legal Matters&rdquo;
in the Prospectus Supplement. In giving such consent, we do not imply or admit that we are &ldquo;experts&rdquo; within the meaning
of the Act, or other rules and regulations of the Commission issued thereunder with respect to any part of the Registration Statement,
including this exhibit.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 27.35pt">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; width: 100%">
<TR STYLE="vertical-align: bottom">
    <TD>&nbsp;</TD>
    <TD COLSPAN="2" STYLE="font: 10pt Times New Roman, Times, Serif">Very truly yours,</TD></TR>
<TR STYLE="vertical-align: bottom">
    <TD>&nbsp;</TD>
    <TD COLSPAN="2" STYLE="font: 10pt Times New Roman, Times, Serif">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom">
    <TD>&nbsp;</TD>
    <TD COLSPAN="2" STYLE="font: 10pt Times New Roman, Times, Serif">FAEGRE DRINKER BIDDLE &amp; REATH LLP</TD></TR>
<TR STYLE="vertical-align: bottom">
    <TD>&nbsp;</TD>
    <TD COLSPAN="2" STYLE="font: 10pt Times New Roman, Times, Serif">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom">
    <TD STYLE="width: 50%">&nbsp;</TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif; width: 3%">By:</TD>
    <TD STYLE="border-bottom: Black 1pt solid; font: 10pt Times New Roman, Times, Serif; width: 47%">/s/ Brandon C. Mason</TD></TR>
<TR STYLE="vertical-align: bottom">
    <TD>&nbsp;</TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif">&nbsp;</TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif">Brandon C. Mason, Partner</TD></TR>
</TABLE>


<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 2.5in; text-indent: 0.5in; text-align: center"></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 2.5in; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; text-align: right; margin-top: 0pt; margin-bottom: 0pt"><B>Annex I</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: left; text-indent: 1in">In rendering the accompanying
opinion letter, we wish to advise you of the following additional qualifications to which such opinion letter is subject:</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: left; text-indent: 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-align: left; text-indent: 0.5in">(a)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;We
have relied upon representations made by the Company in the Transaction Documents, the assumptions set forth below as to the matters
referred therein, and upon certificates of, and information provided by, officers and employees of the Company reasonably believed
by us to be appropriate sources of information, as to the accuracy of such factual matters, in each case without independent verification
thereof or other investigation.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-align: left; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-align: left; text-indent: 0.5in">(b)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Our
opinion letter is limited to the laws of the State of New York (the &ldquo;<U>Covered Laws</U>&rdquo;) and we express no opinion
as to the effect on the matters covered by our opinions of any other law. Furthermore, in rendering opinions as to the Covered
Laws, we have only considered the applicability of statutes, rules, regulations and judicial decisions that a lawyer practicing
in such jurisdiction (the &ldquo;<U>Opining Jurisdictions</U>&rdquo;) exercising customary professional diligence would reasonably
recognize as being directly applicable to the Company or the transactions contemplated by the Transaction Documents.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-align: left; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-align: left; text-indent: 0.5in">(c)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;We
express no opinion as to whether, or to the extent of which, the laws of any particular jurisdiction apply to the subject matter
hereof, including without limitation the enforceability of the governing law provision contained in the Transaction Documents,
except to the extent such provision would be enforceable based on Section&nbsp;5-1401 and 5-1402 of the General Obligations Law
of the State of New York.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-align: left; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-align: left; text-indent: 0.5in">(d)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;We
have relied, without investigation, upon the following assumptions: (i)&nbsp;natural persons who are involved on behalf of
the Company have sufficient legal capacity to enter into and perform, on behalf of the Company, the transaction in question
and to carry out their role in the transaction; (ii)&nbsp;each Transaction Document has been duly authorized, executed and
delivered by each party thereto; (iii)&nbsp;each party having rights under any of the Transaction Documents has satisfied
those legal requirements that are applicable to it to the extent necessary to make the Transaction Documents enforceable
against it and has complied with all legal requirements pertaining to its status as such status relates to its rights to
enforce the Transaction Documents against it and the other parties; (iv)&nbsp;each document submitted to us for review is
accurate and complete, each such document that is an original is authentic, each such document that is a copy conforms to an
authentic original, and all signatures on each such document are genuine; (v)&nbsp;there has not been any mutual mistake of
fact or misunderstanding, fraud, duress or undue influence; (vi)&nbsp;all statutes, judicial and administrative decisions,
and rules and regulations of governmental agencies, constituting the Covered Laws, are publicly available to lawyers
practicing in the Opining Jurisdictions; (vii)&nbsp;all relevant statutes, rules, regulations or agency actions are
constitutional and valid unless a reported decision in the Opining Jurisdictions has specifically addressed but not resolved,
or has established, its unconstitutionality or invalidity; (viii)&nbsp;the Company will not in the future take any
discretionary action (including a decision not to act) permitted under the Transaction Documents that would result in a
violation of law or constitute a breach or default under any other agreement, order or regulation; (ix)&nbsp;the Company will
obtain all permits and governmental approvals required in the future, and take all future actions similarly required,
relevant to the performance of the Transaction Documents; (x)&nbsp;all parties to the transaction will act in accordance
with, and will refrain from taking any action that is forbidden by, the terms and conditions of the Transaction Documents;
(xi) there are no agreements or understandings among the parties, written or oral, and there is no usage of trade or course
of prior dealing among the parties that would, in either case, define, supplement or qualify the terms of any of the
Transaction Documents; and (xii) the conduct of the parties to the Transaction Documents has complied with any requirement of
good faith, fair dealing and conscionability.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-align: justify"></P>

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    <DIV STYLE="page-break-before: always; margin-top: 6pt; margin-bottom: 12pt"><P STYLE="margin: 0pt">&nbsp;</P></DIV>
    <!-- Field: /Page -->

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-align: left; text-indent: 0.5in">(e)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;We
have further assumed, without investigation, that (i) the Company has been duly organized and is validly existing and in good standing
under the laws of its jurisdiction of incorporation; (ii) the Company has the power and authority under its governing documents
and the laws of its jurisdiction of incorporation to execute and deliver the Transaction Documents, to perform its obligations
thereunder and to consummate the transactions contemplated thereby; (iii)&nbsp;the Transaction Documents have been duly authorized,
executed and delivered by the Company; and (iv) the Company has obtained all governmental and third party authorizations, consents,
approvals and orders and has made all filings and registrations required to enable it to execute, deliver and perform its obligations
under, and consummate the transactions contemplated by, the Transaction Documents (which authorizations, consents, approvals and
orders have become final and remain in full force and effect), and such execution, delivery, performance and consummation does
not and will not violate or conflict with any law, rule, regulation, order, decree, judgment, instrument or agreement binding upon
the Company or its properties.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-align: left; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-align: left; text-indent: 0.5in">(f)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;We
express no opinion as to the enforceability or effect in any Transaction Document of (i) any usury or fraudulent transfer, voidable
transaction or fraudulent conveyance &ldquo;savings&rdquo; provision; (ii)&nbsp;any agreement to submit to the jurisdiction of
any particular court or other governmental authority (either as to personal jurisdiction or subject matter jurisdiction), any waivers
of the right to jury trial, any waivers of service of process requirements that would otherwise be applicable, any agreement that
a judgment rendered by a court in one jurisdiction may be enforced in another jurisdiction, or any provision otherwise affecting
the jurisdiction or venue of courts; (iii) any provision waiving or otherwise modifying legal, statutory or equitable defenses
or other procedural, judicial or administrative rights; or (iv) any provision that authorizes one party to act as attorney-in-fact
for another party.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-align: left; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-align: left; text-indent: 0.5in">(g)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The
opinions herein expressed are limited to the specific issues addressed and to facts and laws existing on the date hereof. In rendering
these opinions, we do not undertake to advise you with respect to any other matter or of any change in such facts and laws or in
the interpretation thereof which may occur after the date hereof.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-align: justify; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-align: justify; text-indent: 0.5in"></P>

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    <DIV STYLE="page-break-before: always; margin-top: 6pt; margin-bottom: 12pt"><P STYLE="margin: 0pt">&nbsp;</P></DIV>
    <!-- Field: /Page -->

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-align: justify; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-align: left; text-indent: 0.5in">(h)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Without
limiting any other qualifications set forth herein, the opinions expressed in the accompanying opinion letter are subject to
the effect of generally applicable laws that (i) provide for the enforcement of oral waivers or modifications where a
material change of position in reliance thereon has occurred or provide that a course of performance may operate as a waiver;
(ii)&nbsp;limit the availability of a remedy under certain circumstances where another remedy has been elected;
(iii)&nbsp;limit the enforceability of provisions releasing, exculpating or exempting a party from, or requiring
indemnification of or contribution to a party for, liability for its own action or inaction, to the extent the action or
inaction involves negligence, recklessness, willful misconduct or unlawful conduct; (iv)&nbsp;limit the enforcement of
provisions of a contract that purport to require the waiver of the obligation of good faith, fair dealing, diligence and
reasonableness; (v) may, where less than all of a contract may be unenforceable, limit the enforceability of the balance of
the contract to circumstances in which the unenforceable portion is not an essential part of the agreed exchange; (vi) govern
and afford judicial discretion regarding determination of damages and entitlement to attorneys&rsquo; fees and other costs;
(vii)&nbsp;may permit a party who has materially failed to render or offer performance required by a contract to cure that
failure unless either permitting a cure would unreasonably hinder the aggrieved party from making substitute arrangements for
performance or it is important under the circumstances to the aggrieved party that performance occur by the date stated in
the contract; (viii) may limit the enforceability of provisions imposing premiums or liquidated damages to the extent such
provisions constitute, or are deemed to constitute, a penalty or forfeiture and provisions imposing increased interest rates
upon default, or providing for the compounding of interest or the payment of interest on interest; (ix)&nbsp;may limit the
amount payable under the Notes upon an acceleration to the extent that a portion of the amount so payable is considered by a
court to be unearned interest; (x) may require mitigation of damages; (xi)&nbsp;provide a time limitation after which rights
may not be enforced (i.e., statutes of limitation); (xii) may require that a claim with respect to any debt securities that
are payable other than in U.S. dollars (or a foreign currency judgment in respect of such claim) be converted into U.S.
dollars at a rate of exchange prevailing on a date determined pursuant to applicable law; and (xiii) may limit, delay or
prohibit the making of payments outside the United States.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-align: left">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-align: left; text-indent: 0.5in">(i)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The
opinions expressed herein do not address any of the following legal issues: (i) state securities and Blue Sky laws and regulations;
(ii) state tax laws and regulations; (iii)&nbsp;the statutes and ordinances, administrative decisions and the rules and regulations
of counties, towns, municipalities and special political subdivisions (whether created or enabled through legislative action at
the federal, state or regional level) and judicial decisions to the extent that they deal with the foregoing; (iv)&nbsp;voidable
transaction, fraudulent transfer and fraudulent conveyance laws; and (v) compliance with fiduciary duty and conflict-of-interest
requirements.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-align: justify; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-align: justify; text-indent: 0.5in"></P>

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    <!-- Field: /Page -->

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-align: justify; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>



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<DESCRIPTION>XBRL TAXONOMY EXTENSION LABEL LINKBASE
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      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_CurrentFiscalYearEndDate" xlink:label="dei_CurrentFiscalYearEndDate" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_CurrentFiscalYearEndDate" xlink:to="dei_CurrentFiscalYearEndDate_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_CurrentFiscalYearEndDate_lbl" xml:lang="en-US">Current Fiscal Year End Date</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityFileNumber" xlink:label="dei_EntityFileNumber" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityFileNumber" xlink:to="dei_EntityFileNumber_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_EntityFileNumber_lbl" xml:lang="en-US">Entity File Number</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityRegistrantName" xlink:label="dei_EntityRegistrantName" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityRegistrantName" xlink:to="dei_EntityRegistrantName_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_EntityRegistrantName_lbl" xml:lang="en-US">Entity Registrant Name</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityCentralIndexKey" xlink:label="dei_EntityCentralIndexKey" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityCentralIndexKey" xlink:to="dei_EntityCentralIndexKey_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_EntityCentralIndexKey_lbl" xml:lang="en-US">Entity Central Index Key</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityPrimarySicNumber" xlink:label="dei_EntityPrimarySicNumber" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityPrimarySicNumber" xlink:to="dei_EntityPrimarySicNumber_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_EntityPrimarySicNumber_lbl" xml:lang="en-US">Entity Primary SIC Number</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityTaxIdentificationNumber" xlink:label="dei_EntityTaxIdentificationNumber" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityTaxIdentificationNumber" xlink:to="dei_EntityTaxIdentificationNumber_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_EntityTaxIdentificationNumber_lbl" xml:lang="en-US">Entity Tax Identification Number</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityIncorporationStateCountryCode" xlink:label="dei_EntityIncorporationStateCountryCode" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityIncorporationStateCountryCode" xlink:to="dei_EntityIncorporationStateCountryCode_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_EntityIncorporationStateCountryCode_lbl" xml:lang="en-US">Entity Incorporation, State or Country Code</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityAddressAddressLine1" xlink:label="dei_EntityAddressAddressLine1" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityAddressAddressLine1" xlink:to="dei_EntityAddressAddressLine1_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_EntityAddressAddressLine1_lbl" xml:lang="en-US">Entity Address, Address Line One</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityAddressAddressLine2" xlink:label="dei_EntityAddressAddressLine2" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityAddressAddressLine2" xlink:to="dei_EntityAddressAddressLine2_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_EntityAddressAddressLine2_lbl" xml:lang="en-US">Entity Address, Address Line Two</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityAddressAddressLine3" xlink:label="dei_EntityAddressAddressLine3" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityAddressAddressLine3" xlink:to="dei_EntityAddressAddressLine3_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_EntityAddressAddressLine3_lbl" xml:lang="en-US">Entity Address, Address Line Three</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityAddressCityOrTown" xlink:label="dei_EntityAddressCityOrTown" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityAddressCityOrTown" xlink:to="dei_EntityAddressCityOrTown_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_EntityAddressCityOrTown_lbl" xml:lang="en-US">Entity Address, City or Town</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityAddressStateOrProvince" xlink:label="dei_EntityAddressStateOrProvince" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityAddressStateOrProvince" xlink:to="dei_EntityAddressStateOrProvince_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_EntityAddressStateOrProvince_lbl" xml:lang="en-US">Entity Address, State or Province</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityAddressCountry" xlink:label="dei_EntityAddressCountry" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityAddressCountry" xlink:to="dei_EntityAddressCountry_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_EntityAddressCountry_lbl" xml:lang="en-US">Entity Address, Country</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityAddressPostalZipCode" xlink:label="dei_EntityAddressPostalZipCode" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityAddressPostalZipCode" xlink:to="dei_EntityAddressPostalZipCode_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_EntityAddressPostalZipCode_lbl" xml:lang="en-US">Entity Address, Postal Zip Code</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_CountryRegion" xlink:label="dei_CountryRegion" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_CountryRegion" xlink:to="dei_CountryRegion_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_CountryRegion_lbl" xml:lang="en-US">Country Region</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_CityAreaCode" xlink:label="dei_CityAreaCode" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_CityAreaCode" xlink:to="dei_CityAreaCode_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_CityAreaCode_lbl" xml:lang="en-US">City Area Code</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_LocalPhoneNumber" xlink:label="dei_LocalPhoneNumber" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_LocalPhoneNumber" xlink:to="dei_LocalPhoneNumber_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_LocalPhoneNumber_lbl" xml:lang="en-US">Local Phone Number</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_Extension" xlink:label="dei_Extension" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_Extension" xlink:to="dei_Extension_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_Extension_lbl" xml:lang="en-US">Extension</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_WrittenCommunications" xlink:label="dei_WrittenCommunications" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_WrittenCommunications" xlink:to="dei_WrittenCommunications_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_WrittenCommunications_lbl" xml:lang="en-US">Written Communications</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_SolicitingMaterial" xlink:label="dei_SolicitingMaterial" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_SolicitingMaterial" xlink:to="dei_SolicitingMaterial_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_SolicitingMaterial_lbl" xml:lang="en-US">Soliciting Material</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_PreCommencementTenderOffer" xlink:label="dei_PreCommencementTenderOffer" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_PreCommencementTenderOffer" xlink:to="dei_PreCommencementTenderOffer_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_PreCommencementTenderOffer_lbl" xml:lang="en-US">Pre-commencement Tender Offer</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_PreCommencementIssuerTenderOffer" xlink:label="dei_PreCommencementIssuerTenderOffer" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_PreCommencementIssuerTenderOffer" xlink:to="dei_PreCommencementIssuerTenderOffer_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_PreCommencementIssuerTenderOffer_lbl" xml:lang="en-US">Pre-commencement Issuer Tender Offer</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_Security12bTitle" xlink:label="dei_Security12bTitle" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_Security12bTitle" xlink:to="dei_Security12bTitle_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_Security12bTitle_lbl" xml:lang="en-US">Title of 12(b) Security</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_NoTradingSymbolFlag" xlink:label="dei_NoTradingSymbolFlag" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_NoTradingSymbolFlag" xlink:to="dei_NoTradingSymbolFlag_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_NoTradingSymbolFlag_lbl" xml:lang="en-US">No Trading Symbol Flag</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_TradingSymbol" xlink:label="dei_TradingSymbol" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_TradingSymbol" xlink:to="dei_TradingSymbol_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_TradingSymbol_lbl" xml:lang="en-US">Trading Symbol</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_SecurityExchangeName" xlink:label="dei_SecurityExchangeName" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_SecurityExchangeName" xlink:to="dei_SecurityExchangeName_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_SecurityExchangeName_lbl" xml:lang="en-US">Security Exchange Name</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_Security12gTitle" xlink:label="dei_Security12gTitle" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_Security12gTitle" xlink:to="dei_Security12gTitle_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_Security12gTitle_lbl" xml:lang="en-US">Title of 12(g) Security</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_SecurityReportingObligation" xlink:label="dei_SecurityReportingObligation" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_SecurityReportingObligation" xlink:to="dei_SecurityReportingObligation_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_SecurityReportingObligation_lbl" xml:lang="en-US">Security Reporting Obligation</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_AnnualInformationForm" xlink:label="dei_AnnualInformationForm" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_AnnualInformationForm" xlink:to="dei_AnnualInformationForm_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_AnnualInformationForm_lbl" xml:lang="en-US">Annual Information Form</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_AuditedAnnualFinancialStatements" xlink:label="dei_AuditedAnnualFinancialStatements" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_AuditedAnnualFinancialStatements" xlink:to="dei_AuditedAnnualFinancialStatements_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_AuditedAnnualFinancialStatements_lbl" xml:lang="en-US">Audited Annual Financial Statements</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityWellKnownSeasonedIssuer" xlink:label="dei_EntityWellKnownSeasonedIssuer" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityWellKnownSeasonedIssuer" xlink:to="dei_EntityWellKnownSeasonedIssuer_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_EntityWellKnownSeasonedIssuer_lbl" xml:lang="en-US">Entity Well-known Seasoned Issuer</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityVoluntaryFilers" xlink:label="dei_EntityVoluntaryFilers" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityVoluntaryFilers" xlink:to="dei_EntityVoluntaryFilers_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_EntityVoluntaryFilers_lbl" xml:lang="en-US">Entity Voluntary Filers</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityCurrentReportingStatus" xlink:label="dei_EntityCurrentReportingStatus" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityCurrentReportingStatus" xlink:to="dei_EntityCurrentReportingStatus_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_EntityCurrentReportingStatus_lbl" xml:lang="en-US">Entity Current Reporting Status</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityInteractiveDataCurrent" xlink:label="dei_EntityInteractiveDataCurrent" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityInteractiveDataCurrent" xlink:to="dei_EntityInteractiveDataCurrent_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_EntityInteractiveDataCurrent_lbl" xml:lang="en-US">Entity Interactive Data Current</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityFilerCategory" xlink:label="dei_EntityFilerCategory" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityFilerCategory" xlink:to="dei_EntityFilerCategory_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_EntityFilerCategory_lbl" xml:lang="en-US">Entity Filer Category</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntitySmallBusiness" xlink:label="dei_EntitySmallBusiness" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntitySmallBusiness" xlink:to="dei_EntitySmallBusiness_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_EntitySmallBusiness_lbl" xml:lang="en-US">Entity Small Business</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityEmergingGrowthCompany" xlink:label="dei_EntityEmergingGrowthCompany" />
      <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityEmergingGrowthCompany" xlink:to="dei_EntityEmergingGrowthCompany_lbl" xlink:type="arc" />
      <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_EntityEmergingGrowthCompany_lbl" xml:lang="en-US">Entity Emerging Growth Company</link:label>
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityExTransitionPeriod" xlink:label="dei_EntityExTransitionPeriod" />
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<DOCUMENT>
<TYPE>EX-101.PRE
<SEQUENCE>8
<FILENAME>bkh-20200612_pre.xml
<DESCRIPTION>XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE
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<html>
<head>
<title></title>
<link rel="stylesheet" type="text/css" href="report.css">
<script type="text/javascript" src="Show.js">/* Do Not Remove This Comment */</script><script type="text/javascript">
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</head>
<body>
<span style="display: none;">v3.20.1</span><table class="report" border="0" cellspacing="2" id="idp6608306912">
<tr>
<th class="tl" colspan="1" rowspan="1"><div style="width: 200px;"><strong>Cover<br></strong></div></th>
<th class="th"><div>Jun. 12, 2020</div></th>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_CoverAbstract', window );"><strong>Cover [Abstract]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_DocumentType', window );">Document Type</a></td>
<td class="text">8-K<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_AmendmentFlag', window );">Amendment Flag</a></td>
<td class="text">false<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_DocumentPeriodEndDate', window );">Document Period End Date</a></td>
<td class="text">Jun. 12,  2020<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_EntityFileNumber', window );">Entity File Number</a></td>
<td class="text">001-31303<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_EntityRegistrantName', window );">Entity Registrant Name</a></td>
<td class="text">Black Hills Corporation<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_EntityCentralIndexKey', window );">Entity Central Index Key</a></td>
<td class="text">0001130464<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_EntityTaxIdentificationNumber', window );">Entity Tax Identification Number</a></td>
<td class="text">46-0458824<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_EntityIncorporationStateCountryCode', window );">Entity Incorporation, State or Country Code</a></td>
<td class="text">SD<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_EntityAddressAddressLine1', window );">Entity Address, Address Line One</a></td>
<td class="text">7001 Mount Rushmore Road<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_EntityAddressCityOrTown', window );">Entity Address, City or Town</a></td>
<td class="text">Rapid City<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_EntityAddressStateOrProvince', window );">Entity Address, State or Province</a></td>
<td class="text">SD<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_EntityAddressPostalZipCode', window );">Entity Address, Postal Zip Code</a></td>
<td class="text">57702<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_CityAreaCode', window );">City Area Code</a></td>
<td class="text">605<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_LocalPhoneNumber', window );">Local Phone Number</a></td>
<td class="text">721-1700<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_WrittenCommunications', window );">Written Communications</a></td>
<td class="text">false<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_SolicitingMaterial', window );">Soliciting Material</a></td>
<td class="text">false<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_PreCommencementTenderOffer', window );">Pre-commencement Tender Offer</a></td>
<td class="text">false<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_PreCommencementIssuerTenderOffer', window );">Pre-commencement Issuer Tender Offer</a></td>
<td class="text">false<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_Security12bTitle', window );">Title of 12(b) Security</a></td>
<td class="text">Common Stock of $1.00 par value<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_TradingSymbol', window );">Trading Symbol</a></td>
<td class="text">BKH<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_SecurityExchangeName', window );">Security Exchange Name</a></td>
<td class="text">NYSE<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_EntityEmergingGrowthCompany', window );">Entity Emerging Growth Company</a></td>
<td class="text">false<span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_AmendmentFlag">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Boolean flag that is true when the XBRL content amends previously-filed or accepted submission.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_AmendmentFlag</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:booleanItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_CityAreaCode">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Area code of city</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_CityAreaCode</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:normalizedStringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_CoverAbstract">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Cover page.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_CoverAbstract</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:stringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_DocumentPeriodEndDate">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The end date of the period reflected on the cover page if a periodic report. For all other reports and registration statements containing historical data, it is the date up through which that historical data is presented.  If there is no historical data in the report, use the filing date. The format of the date is CCYY-MM-DD.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_DocumentPeriodEndDate</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:dateItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_DocumentType">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The type of document being provided (such as 10-K, 10-Q, 485BPOS, etc). The document type is limited to the same value as the supporting SEC submission type, or the word 'Other'.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_DocumentType</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dei:submissionTypeItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_EntityAddressAddressLine1">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Address Line 1 such as Attn, Building Name, Street Name</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_EntityAddressAddressLine1</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:normalizedStringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_EntityAddressCityOrTown">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Name of the City or Town</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_EntityAddressCityOrTown</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:normalizedStringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_EntityAddressPostalZipCode">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Code for the postal or zip code</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_EntityAddressPostalZipCode</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:normalizedStringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_EntityAddressStateOrProvince">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Name of the state or province.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_EntityAddressStateOrProvince</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dei:stateOrProvinceItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_EntityCentralIndexKey">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>A unique 10-digit SEC-issued value to identify entities that have filed disclosures with the SEC. It is commonly abbreviated as CIK.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher SEC<br> -Name Regulation 12B<br> -Number 240<br> -Section 12<br> -Subsection b-2<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_EntityCentralIndexKey</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dei:centralIndexKeyItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_EntityEmergingGrowthCompany">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Indicate if registrant meets the emerging growth company criteria.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher SEC<br> -Name Regulation 12B<br> -Number 240<br> -Section 12<br> -Subsection b-2<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_EntityEmergingGrowthCompany</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:booleanItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_EntityFileNumber">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Commission file number. The field allows up to 17 characters. The prefix may contain 1-3 digits, the sequence number may contain 1-8 digits, the optional suffix may contain 1-4 characters, and the fields are separated with a hyphen.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_EntityFileNumber</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dei:fileNumberItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_EntityIncorporationStateCountryCode">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Two-character EDGAR code representing the state or country of incorporation.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_EntityIncorporationStateCountryCode</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dei:edgarStateCountryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_EntityRegistrantName">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The exact name of the entity filing the report as specified in its charter, which is required by forms filed with the SEC.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher SEC<br> -Name Regulation 12B<br> -Number 240<br> -Section 12<br> -Subsection b-2<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_EntityRegistrantName</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:normalizedStringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_EntityTaxIdentificationNumber">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The Tax Identification Number (TIN), also known as an Employer Identification Number (EIN), is a unique 9-digit value assigned by the IRS.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher SEC<br> -Name Regulation 12B<br> -Number 240<br> -Section 12<br> -Subsection b-2<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_EntityTaxIdentificationNumber</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dei:employerIdItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Local phone number for entity.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
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<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher SEC<br> -Name Exchange Act<br> -Number 240<br> -Section 13e<br> -Subsection 4c<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
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<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_PreCommencementIssuerTenderOffer</td>
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<td>na</td>
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<td><strong> Period Type:</strong></td>
<td>duration</td>
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<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher SEC<br> -Name Exchange Act<br> -Number 240<br> -Section 14d<br> -Subsection 2b<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_PreCommencementTenderOffer</td>
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<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
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<td>xbrli:booleanItemType</td>
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<td><strong> Balance Type:</strong></td>
<td>na</td>
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<td><strong> Period Type:</strong></td>
<td>duration</td>
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<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_Security12bTitle">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Title of a 12(b) registered security.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher SEC<br> -Name Exchange Act<br> -Number 240<br> -Section 12<br> -Subsection b<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_Security12bTitle</td>
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<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
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<td>dei:securityTitleItemType</td>
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<td><strong> Balance Type:</strong></td>
<td>na</td>
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<td>duration</td>
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<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Name of the Exchange on which a security is registered.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher SEC<br> -Name Exchange Act<br> -Number 240<br> -Section 12<br> -Subsection d1-1<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_SecurityExchangeName</td>
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<td><strong> Balance Type:</strong></td>
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<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_SolicitingMaterial">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as soliciting material pursuant to Rule 14a-12 under the Exchange Act.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher SEC<br> -Name Exchange Act<br> -Section 14a<br> -Number 240<br> -Subsection 12<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
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<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Trading symbol of an instrument as listed on an exchange.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as written communications pursuant to Rule 425 under the Securities Act.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher SEC<br> -Name Securities Act<br> -Number 230<br> -Section 425<br></p></div>
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