<SUBMISSION>
<ACCESSION-NUMBER>0001130464-07-000122
<TYPE>8-K
<PUBLIC-DOCUMENT-COUNT>3
<PERIOD>20070319
<ITEMS>1.01
<ITEMS>2.03
<ITEMS>9.01
<FILING-DATE>20070319
<DATE-OF-FILING-DATE-CHANGE>20070319
<FILER>
<COMPANY-DATA>
<CONFORMED-NAME>BLACK HILLS CORP /SD/
<CIK>0001130464
<ASSIGNED-SIC>4911
<IRS-NUMBER>460458824
<STATE-OF-INCORPORATION>SD
<FISCAL-YEAR-END>1231
</COMPANY-DATA>
<FILING-VALUES>
<FORM-TYPE>8-K
<ACT>34
<FILE-NUMBER>001-31303
<FILM-NUMBER>07702483
</FILING-VALUES>
<BUSINESS-ADDRESS>
<STREET1>625 9TH STREET
<STREET2>PO BOX 1400
<CITY>RAPID CITY
<STATE>SD
<ZIP>57709
<PHONE>6057212343
</BUSINESS-ADDRESS>
<MAIL-ADDRESS>
<STREET1>625 9TH STREET
<STREET2>PO BOX 1400
<CITY>RAPID
<STATE>SD
<ZIP>57709
</MAIL-ADDRESS>
<FORMER-COMPANY>
<FORMER-CONFORMED-NAME>BLACK HILLS HOLDING CORP
<DATE-CHANGED>20001222
</FORMER-COMPANY>
</FILER>
<DOCUMENT>
<TYPE>8-K
<SEQUENCE>1
<FILENAME>bhcform8k031907.htm
<TEXT>
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<p style=' margin-bottom:0pt; margin-top:0pt;text-align:center;border-bottom:solid 2.25pt;padding-bottom:1;padding-top:0;'><font size=5>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:center;'><b><font SIZE=5>UNITED STATES</font></b></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:center;'><b><font SIZE=5>SECURITIES AND EXCHANGE COMMISSION</font></b></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:center;'><b><font size=2>Washington, D.C. 20549</font></b></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:center;'><b><font size=3>___________</font></b></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=3>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:center;'><b><font SIZE=5>FORM 8-K</font></b></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:center;'><b><font size=3>____________</font></b></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:center;'><font size=3>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:center;'><b><font SIZE=2>CURRENT REPORT</font></b></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:center;'><b><font size=2>PURSUANT TO SECTION 13 OR 15(d) OF THE</font></b></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:center;'><b><font SIZE=2>SECURITIES EXCHANGE ACT OF 1934</font></b></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:center;'><font size=3>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:center;'><b><font size=2>Date of Report (Date of earliest event reported) March 13, 2007</font></b></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:center;'><b><font size=3>____________</font></b></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:center;'><font size=3>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:center;'><b><font SIZE=5>BLACK HILLS CORPORATION</font></b></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:center;'><b><font size=2>(Exact name of registrant as specified in its charter)</font></b></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:center;'><b><font size=3>____________</font></b></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:center;'><font size=3>&nbsp;</font></p>


<table border="0" cellspacing=0 cellpadding=0 width="93%" style='margin-left:23.4pt;border-collapse:collapse'>
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            <p style='margin-left:0pt;text-indent:0pt;text-align:center;margin-top:0pt;margin-bottom:0pt'><b><font size=2>South Dakota</font></b><b></b></p> </td> </tr>
    <tr >
        <td  colspan="5" valign=top style='padding:0in 5.4pt 0in 5.4pt'>
            <p style='margin-left:0pt;text-indent:0pt;text-align:center;margin-top:0pt;margin-bottom:0pt'><b><font size=2>(State or other jurisdiction of incorporation)</font></b><b></b></p> </td> </tr>
    <tr >
        <td  colspan="2" valign=top style='padding:0in 5.4pt 0in 5.4pt'>
            <p style='margin-left:0pt;text-indent:0pt;text-align:center;margin-top:0pt;margin-bottom:0pt'><b><font size=2>001-31303</font></b><b></b></p> </td>
        <td width="216" valign=top style='padding:0in 5.4pt 0in 5.4pt'>
            <p style='margin-left:0pt;text-indent:0pt;text-align:center;margin-top:0pt;margin-bottom:0pt'><b>&nbsp;</b></p> </td>
        <td  colspan="2" valign=top style='padding:0in 5.4pt 0in 5.4pt'>
            <p style='margin-left:0pt;text-indent:0pt;text-align:center;margin-top:0pt;margin-bottom:0pt'><b><font size=2>46-0458824</font></b><b></b></p> </td> </tr>
    <tr >
        <td  colspan="2" valign=top style='padding:0in 5.4pt 0in 5.4pt'>
            <p style='margin-left:0pt;text-indent:0pt;text-align:center;margin-top:0pt;margin-bottom:0pt'><b><font size=2>(Commission File Number)</font></b><b></b></p> </td>
        <td width="216" valign=top style='padding:0in 5.4pt 0in 5.4pt'>
            <p style='margin-left:0pt;text-indent:0pt;text-align:center;margin-top:0pt;margin-bottom:0pt'><b>&nbsp;</b></p> </td>
        <td  colspan="2" valign=top style='padding:0in 5.4pt 0in 5.4pt'>
            <p style='margin-left:0pt;text-indent:0pt;text-align:center;margin-top:0pt;margin-bottom:0pt'><b><font size=2>(IRS Employer Identification No.)</font></b><b></b></p> </td> </tr>
    <tr >
        <td  colspan="2" valign=top style='padding:0in 5.4pt 0in 5.4pt'>
            <p style='margin-left:0pt;text-indent:0pt;text-align:center;margin-top:0pt;margin-bottom:0pt'><b>&nbsp;</b></p> </td>
        <td width="216" valign=top style='padding:0in 5.4pt 0in 5.4pt'>
            <p style='margin-left:0pt;text-indent:0pt;text-align:center;margin-top:0pt;margin-bottom:0pt'><b>&nbsp;</b></p> </td>
        <td  colspan="2" valign=top style='padding:0in 5.4pt 0in 5.4pt'>
            <p style='margin-left:0pt;text-indent:0pt;text-align:center;margin-top:0pt;margin-bottom:0pt'><b>&nbsp;</b></p> </td> </tr>
    <tr >
        <td  colspan="3" rowspan=2 valign=top style='padding: 0in 5.4pt 0in 5.4pt'>
            <p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><b><font size=2>625 Ninth Street, PO Box 1400 </font></b></p>
<p style='margin-left:12.6pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><b><font size=2>Rapid City, South Dakota</font></b></p>
<p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><b><font size=2>(Address of principal executive offices)</font></b><b></b></p> </td>
        <td  colspan="2" valign=top style='padding:0in 5.4pt 0in 5.4pt'>
            <p style='margin-left:0pt;text-indent:0pt;text-align:center;margin-top:0pt;margin-bottom:0pt'><b><font size=2>57709-1400</font></b><b></b></p> </td> </tr>
    <tr >
        <td  colspan="2" valign=top style='padding:0in 5.4pt 0in 5.4pt'>
            <p style='margin-left:0pt;text-indent:0pt;text-align:center;margin-top:0pt;margin-bottom:0pt'><b><font size=2>(Zip Code)</font></b><b></b></p> </td> </tr>
    <tr >
        <td  colspan="5" valign=top style='padding:0in 5.4pt 0in 5.4pt'>
            <p style='margin-left:0pt;text-indent:0pt;text-align:center;margin-top:0pt;margin-bottom:0pt'><b><font size=2>605.721.1700</font></b><b></b></p> </td> </tr>
    <tr >
        <td  colspan="5" valign=top style='padding:0in 5.4pt 0in 5.4pt'>
            <p style='margin-left:0pt;text-indent:0pt;text-align:center;margin-top:0pt;margin-bottom:0pt'><b><font size=2>(Registrant&#146;s telephone number, including area code)</font></b><b></b></p> </td> </tr>
    <tr >
        <td width="162" valign=top style='padding:0in 5.4pt 0in 5.4pt'>
            <p style='margin-left:0pt;text-indent:0pt;text-align:center;margin-top:0pt;margin-bottom:0pt'><b>&nbsp;</b></p> </td>
        <td  colspan="3" valign=top style='padding:0in 5.4pt 0in 5.4pt'>
            <p style='margin-left:0pt;text-indent:0pt;text-align:center;margin-top:0pt;margin-bottom:0pt'><b>&nbsp;</b></p> </td>
        <td width="186" valign=top style='padding:0in 5.4pt 0in 5.4pt'>
            <p style='margin-left:0pt;text-indent:0pt;text-align:center;margin-top:0pt;margin-bottom:0pt'><b>&nbsp;</b></p> </td> </tr>
    <tr >
        <td  colspan="5" valign=top style='padding:0in 5.4pt 0in 5.4pt'>
            <p style='margin-left:0pt;text-indent:0pt;text-align:center;margin-top:0pt;margin-bottom:0pt'><b><font size=2>Not Applicable</font></b><b></b></p> </td> </tr>
    <tr >
        <td  colspan="5" valign=top style='padding:0in 5.4pt 0in 5.4pt'>
            <p style='margin-left:0pt;text-indent:0pt;text-align:center;margin-top:0pt;margin-bottom:0pt'><b><font size=2>(Former name or former address, if changed since last report)</font></b><b></b></p> </td> </tr>
    <tr>
        <td width="138" ></td>

        <td width="15" ></td>

        <td width="185" ></td>

        <td width="10" ></td>

        <td width="159" ></td> </tr> </table>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:center;'><b><font size=3>____________</font></b></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:center;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt; text-indent:0.5in;text-align:left;'><font size=2>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 (</font><i><font size=2>see</font></i><font size=2> General Instruction A.2. below):</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt; text-indent:0.5in;text-align:left;'><font size=2>&nbsp;</font></p>


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            <p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><b><font size=2>&#144;</font></b><b></b></p> </td>
        <td width="612" style='padding:0in 5.4pt 0in 5.4pt'>
            <p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><font size=2>Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)</font></p>
<p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><font size=1>&nbsp;</font></p> </td> </tr>
    <tr >
        <td width="18" valign=top style='padding:0in 5.4pt 0in 5.4pt'>
            <p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><b><font size=2>&#144;</font></b><b></b></p> </td>
        <td width="612" valign=top style='padding:0in 5.4pt 0in 5.4pt'>
            <p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><font size=2>Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)</font></p>
<p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><font size=1>&nbsp;</font></p> </td> </tr>
    <tr >
        <td width="18" valign=top style='padding:0in 5.4pt 0in 5.4pt'>
            <p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><b><font size=2>&#144;</font></b><b></b></p> </td>
        <td width="612" valign=top style='padding:0in 5.4pt 0in 5.4pt'>
            <p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><font size=2>Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))</font></p>
<p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><font size=1>&nbsp;</font></p> </td> </tr>
    <tr >
        <td width="18" valign=top style='padding:0in 5.4pt 0in 5.4pt'>
            <p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><b><font size=2>&#144;</font></b><b></b></p> </td>
        <td width="612" valign=top style='padding:0in 5.4pt 0in 5.4pt'>
            <p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><font size=2>Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))</font></p>
<p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><font size=1>&nbsp;</font></p> </td> </tr></table>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:center;border-bottom:solid 2.25pt;padding-bottom:1;padding-top:0;'><font size=5>&nbsp;</font></p>


<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:center;'><font size=2>1</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>
<br>
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<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>


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            <p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><b><font size=2>Item 1.01</font></b></p> </td>
        <td width="316" valign=top >
            <p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><b><font size=2>Entry into a Material Definitive Agreement</font></b></p> </td> </tr></table>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:12pt; margin-top:0pt; text-indent:0.3in;text-align:left;'><font size=2>On March 13, 2007, the Registrant entered into a Second Amendment to the Credit Agreement dated May 5, 2005, among Black Hills Corporation, as Borrower, the financial institutions from time to time party thereto as Banks, U.S. Bank, National Association, as Co-Syndication Agent, Union Bank of California, N.A., as Co-Syndication Agent, BANK OF AMERICA, N.A., as Co-Documentation Agent, BANK OF MONTREAL dba HARRIS NESBITT, as Co-Documentation Agent, and ABN AMRO Bank N.V. as Administrative Agent (the &#147;BHC Credit Agreement&#148;).  </font></p>

<p style=' margin-bottom:12pt; margin-top:0pt; text-indent:0.31in;text-align:left;'><font size=2>The Second Amendment (i) increased the limit for borrowings or other credit accommodations for the Marketing Subsidiary Excluded Credit Facilities from $260 million to $300 million, (ii) increased the aggregate amount of commitments allowed under the facility without receiving the consent of the Banks from $500 million to $600 million, (iii) effective with the acquisition of certain electric and gas utility assets from Aquila, Inc. will increase the recourse leverage ratio limit from 0.65 to 1.00, to 0.70 to 1.00 for the first year after the Aquila acquisition and 0.65 to 1.00 thereafter, and (iv) allowed for other minor modifications to enable the Registrant to complete the acquisition of certain electric and gas utility assets from Aquila, Inc. </font></p>

<p style=' margin-bottom:12pt; margin-top:0pt; text-indent:0.31in;text-align:left;'><font size=2>The BHC Credit Agreement dated May 5, 2005, filed as Exhibit 10.1 to the Registrant&#146;s Form 10-Q for March 31, 2005, and the First and Second Amendments to the BHC Credit Agreement filed as Exhibits 10.1 and 10.2 to this Form 8-K are incorporated herein by reference. </font></p>


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            <p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><b><font size=2>Item 2.03 </font></b></p> </td>
        <td  valign=top >
            <p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><b><font size=2>Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant</font></b></p> </td> </tr></table>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>


<table border="0" cellspacing=0 cellpadding=0 width="420" style='margin-left:.5in;border-collapse:collapse'>
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            <p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><font size=2>The information required by this item is included in Item 1.01.</font></p> </td> </tr></table>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>


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            <p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><b><font size=2>Item 9.01</font></b></p> </td>
        <td width="253" valign=top >
            <p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><b><font size=2>Financial Statements and Exhibits</font></b></p> </td> </tr></table>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>


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            <p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><font size=2>(c)</font></p> </td>
        <td width="72" valign=top >
            <p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><font size=2>Exhibits</font></p> </td> </tr></table>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>


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            <p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><font size=2>10.1</font></p> </td>
        <td  valign=top >
            <p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><font size=2>First Amendment to the Credit Agreement, dated as of May 12, 2006 among Black Hills Corporation, as Borrower, ABN AMRO Bank N.V., in its capacity as agent for the Banks under the Credit Agreement, and as a Bank, and the other Banks party thereto.</font></p> </td> </tr></table>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>


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            <p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><font size=2>10.2</font></p> </td>
        <td  valign=top >
            <p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><font size=2>Second Amendment to the Credit Agreement, dated as of March 13, 2007 among Black Hills Corporation, as Borrower, ABN AMRO Bank N.V., in its capacity as agent for the Banks under the Credit Agreement, and as a Bank, and the other Banks party thereto.</font></p> </td> </tr></table>

<p style=' margin-bottom:0pt; margin-top:0pt; margin-left:0.5in;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'>
</p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:center;'><font size=2>2</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>
<br>
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<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:center;'><u><font SIZE=2>SIGNATURES</font></u></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt; text-indent:0.3in;text-align:left;'><font size=2>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.</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>


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            <p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><font size=1>&nbsp;</font></p> </td>
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            <p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><font SIZE=2>BLACK HILLS CORPORATION</font></p> </td> </tr>
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            <p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><font size=1>&nbsp;</font></p> </td>
        <td width="319" valign=top style='padding:0in 5.4pt 0in 5.4pt'>
            <p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><font size=1>&nbsp;</font></p> </td> </tr>
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            <p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><font size=1>&nbsp;</font></p> </td>
        <td width="319" valign=top style='padding:0in 5.4pt 0in 5.4pt'>
            <p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><font size=1>&nbsp;</font></p> </td> </tr>
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            <p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><font size=1>&nbsp;</font></p> </td>
        <td width="319" valign=top style='padding:0in 5.4pt 0in 5.4pt'>
            <p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><font size=2>By:&nbsp;&nbsp;</font><u><font size=2>/s/ Mark T. Thies</font></u>                                                                                                                   </p> </td> </tr>
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            <p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><font size=1>&nbsp;</font></p> </td>
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            <p style='margin-left:0pt;text-indent:21.0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><font size=2>Mark T. Thies</font></p> </td> </tr>
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            <p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><font size=1>&nbsp;</font></p> </td>
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            <p style='margin-left:0pt;text-indent:21.75pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><font size=2>Executive Vice President</font></p> </td> </tr>
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            <p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><font size=1>&nbsp;</font></p> </td>
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            <p style='margin-left:0pt;text-indent:26.25pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><font size=2>and Chief Financial Officer</font></p> </td> </tr>
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            <p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><font size=1>&nbsp;</font></p> </td>
        <td width="319" valign=top style='padding:0in 5.4pt 0in 5.4pt'>
            <p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><font size=1>&nbsp;</font></p> </td> </tr>
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            <p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><font size=2>Date:&nbsp;&nbsp;March 19, 2007</font></p> </td>
        <td width="319" valign=top style='padding:0in 5.4pt 0in 5.4pt'>
            <p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><font size=1>&nbsp;</font></p> </td> </tr></table>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>

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</p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:center;'><font size=2>3</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>
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<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:center;'><b><font size=2>Exhibit Index</font></b></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:center;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:center;'><font size=2>&nbsp;</font></p>


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            <p style='margin-left:0pt;text-indent:0pt;text-align:center;margin-top:0pt;margin-bottom:0pt'><u><b><font size=2>Exhibit No.</font></b></u><b></b></p> </td>
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            <p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><u><b><font size=2>Description</font></b></u><b><u></u></b></p> </td> </tr>
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            <p style='margin-left:0pt;text-indent:0pt;text-align:center;margin-top:0pt;margin-bottom:0pt'><b>&nbsp;</b></p> </td>
        <td width="481" valign=top style='padding:0in 5.4pt 0in 5.4pt'>
            <p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><b>&nbsp;</b></p> </td> </tr>
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            <p style='margin-left:0pt;text-indent:0pt;text-align:center;margin-top:0pt;margin-bottom:0pt'><font size=2>10.1</font></p> </td>
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            <p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><font size=2>First Amendment to the Credit Agreement, dated as of May 12, 2006 among Black Hills Corporation, as Borrower, ABN AMRO Bank N.V., in its capacity as agent for the Banks under the Credit Agreement, and as a Bank, and the other Banks party thereto.</font><b></b></p> </td> </tr>
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            <p style='margin-left:0pt;text-indent:0pt;text-align:center;margin-top:0pt;margin-bottom:0pt'><font size=1>&nbsp;</font></p> </td>
        <td width="481" valign=top style='padding:0in 5.4pt 0in 5.4pt'>
            <p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><font size=1>&nbsp;</font></p> </td> </tr>
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            <p style='margin-left:0pt;text-indent:0pt;text-align:center;margin-top:0pt;margin-bottom:0pt'><font size=2>10.2</font></p> </td>
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            <p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><font size=2>Second Amendment to the Credit Agreement, dated as of March 13, 2007 among Black Hills Corporation, as Borrower, ABN AMRO Bank N.V., in its capacity as agent for the Banks under the Credit Agreement, and as a Bank, and the other Banks party thereto.</font></p> </td> </tr></table>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:center;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:center;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:center;'><font size=2>4</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>


<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>


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<p style=' margin-bottom:12pt; margin-top:0pt;text-align:center;'><b><font SIZE=2>FIRST AMENDMENT TO THE CREDIT AGREEMENT</font></b></p>

<p style=' margin-bottom:12pt; margin-top:0pt; text-indent:0.5in;text-align:justify;'><b><font size=2>THIS FIRST AMENDMENT TO THE CREDIT AGREEMENT (First Amendment), </font></b><font size=2>dated as of May 12, 2006 among Black Hills Corporation, a South Dakota corporation (</font><i><font size=2>&#147;Borrower&#148;</font></i><font size=2>)</font><i><font size=2>, </font></i><font size=2>ABN AMRO Bank N.V., in its capacity as agent for the Banks under the Credit Agreement describe below (in such capacity, the </font><i><font size=2>&#147;Administrative Agent&#148;)</font></i><font size=2>, and as a Bank,</font><i><font size=2> </font></i><font size=2>and the other Banks party hereto</font><i><font size=2>.</font></i></p>

<p style=' margin-bottom:12pt; margin-top:0pt;text-align:center;'><b><font SIZE=2>WITNESSETH THAT:</font></b></p>

<p style=' margin-bottom:12pt; margin-top:0pt; text-indent:0.5in;text-align:justify;'><b><font SIZE=2>WHEREAS</font></b><font size=2>, the Borrower, Administrative Agent and the Banks have entered into that certain Credit Agreement dated as of May 5, 2005 (as the same has been amended, modified or restated prior to the effectiveness hereof, the </font><i><b><font size=2>&#147;Credit Agreement&#148;</font></b></i><font size=2>);</font><b><font size=2> </font></b></p>

<p style=' margin-bottom:12pt; margin-top:0pt; text-indent:0.5in;text-align:justify;'><b><font SIZE=2>WHEREAS, </font></b><font size=2>the Borrower desires to consolidate the credit facilities of its existing Marketing Subsidiaries</font><i><font size=2>, </font></i><font size=2>as described in the Credit Agreement, as well as modify certain restrictions contained in the Credit Agreement with respect to such credit facilities; and</font></p>

<p style=' margin-bottom:12pt; margin-top:0pt; text-indent:0.5in;text-align:justify;'><b><font SIZE=2>WHEREAS,</font></b><font size=2> the Administrative Agent and the Banks are willing to agree to this First Amendment subject to all of the terms and conditions hereof and on the basis of the representations and warranties hereinafter set forth.</font></p>

<p style=' margin-bottom:12pt; margin-top:0pt; text-indent:0.5in;text-align:justify;'><b><font SIZE=2>NOW, THEREFORE, </font></b><font size=2>in consideration of the recitals set forth above and for other good and valuable consideration, the receipt and adequacy of which are hereby acknowledged, the parties hereto hereby agree as follows:</font></p>

<p style=' margin-bottom:12pt; margin-top:0pt; text-indent:0.5in;text-align:justify;'><font size=2>SECTION 1.  DEFINITIONS.  All capitalized terms used but not otherwise defined in this First Amendment shall have the meaning ascribed to them in the Credit Agreement.  Unless otherwise specified, all section references herein refer to sections of the Credit Agreement.</font></p>

<p style=' margin-bottom:12pt; margin-top:0pt; text-indent:0.5in;text-align:justify;'><font size=2>SECTION 2.  AMENDMENTS TO CREDIT AGREEMENT.  The Credit Agreement is hereby amended as follows:</font></p>

<p style=' margin-bottom:12pt; margin-top:0pt; text-indent:0.5in;text-align:justify;'><font size=2>Section 2.1  The definitions of &#147;Marketing Subsidiary&#148; and &#147;Marketing Subsidiary Excluded Credit Facilities&#148; appearing in Section 1.1 of the Credit Agreement are hereby deleted in their respective entireties and the following definitions are hereby substituted therefor, respectively:</font></p>

<p style=' margin-bottom:12pt; margin-top:0pt; text-indent:0.5in;text-align:justify;'><i><font size=2>&#147;Marketing Subsidiary&#148; means Enserco Energy, Inc., a South Dakota corporation and its respective subsidiaries.</font></i></p>

<p style=' margin-bottom:12pt; margin-top:0pt; text-indent:0.5in;text-align:justify;'><i><font size=2>&#147;Marketing Subsidiary Excluded Credit Facilities&#148;</font></i><font size=2> means those certain credit facilities of the Marketing Subsidiaries described on </font><b><font size=2>Schedule 7.15(a)</font></b><font size=2> hereof, as such credit facilities are in effect on the Effective Date or as any such credit facility may be amended, restated or otherwise modified on terms and conditions and pursuant to documentation to accommodate an increase in the borrowings thereunder from $200,000,000 to $260,000,000, provided that such credit facilities shall cease to be Marketing Subsidiary Excluded Credit Facilities to the extent availability is otherwise increased, any substantive term thereof is materially modified, or such </font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:justify;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:right;'><font size=1>First Amendment</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:justify;'><font size=2>&nbsp;</font></p>
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<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:12pt; margin-top:0pt;text-align:justify;'><font size=2>credit facility is extended more than once in any fiscal year for a period of more than one year.  Any replacement credit facility of a Marketing Subsidiary Excluded Credit Facility shall be deemed a Marketing Subsidiary Excluded Credit Facility only if such replacement credit facility contains terms substantially the same as the Marketing Subsidiary Excluded Credit Facility being replaced (including tenor but excluding the increase in borrowings otherwise permitted above) or is approved in writing by the Required Banks.</font></p>

<p style=' margin-bottom:12pt; margin-top:0pt; text-indent:0.5in;text-align:justify;'><font size=2>Section 2.2  Amendment to Schedule 7.15.  Schedule 7.15 is amended by deleting any reference to Black Hills Energy Resources, Inc. Credit Facility with Fortis Capital Corp.</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt; text-indent:0.5in;text-align:justify;'><font size=2>Section 3.  </font><u><font size=2>Ratification</font></u><font size=2>.  The Borrower hereby ratifies, acknowledges, affirms and reconfirms its rights, interests and obligations under each Credit Document, as amended hereby,  and agrees to perform each of its obligations thereunder as and when required.  By executing this Amendment, the Borrower hereby further ratifies, acknowledges, affirms and reconfirms that each Credit Document, as amended hereby, constitutes a legal, valid and binding obligation of the Borrower enforceable against the Borrower in accordance with its terms, and that each such Credit Document, as amended hereby, is in full force and effect.</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt; text-indent:0.5in;text-align:justify;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt; text-indent:0.5in;text-align:justify;'><font size=2>Section 4.  </font><u><font size=2>Conditions</font></u><font size=2>.  The effectiveness of this Amendment is subject to the following conditions precedent:</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt; text-indent:0.5in;text-align:justify;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt; text-indent:0.59in;text-align:justify;'><font size=2>Section 4.1  The Borrower, the Administrative agent and the Required Lenders shall have executed and delivered this Amendment, and the Borrower shall have executed and/or delivered such other documents and instruments as Administrative Agent may require.</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:justify;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt; text-indent:0.59in;text-align:justify;'><font size=2>Section 4.2  The representations and warranties set forth in Section 5 of this Amendment shall be true and correct.</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:justify;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt; text-indent:0.59in;text-align:justify;'><font size=2>Section 4.3  All proceedings taken in connection with the transactions contemplated by this Amendment and all documents, instruments and other legal matters incident thereto shall be reasonably satisfactory to the Administrative Agent and its legal counsel.</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:justify;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt; text-indent:0.3in;text-align:justify;'><font size=2>Section 5.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</font><u><font size=2>Representations and Warranties</font></u><font size=2>.&nbsp;&nbsp;&nbsp;  To induce the Administrative Agent and the Banks party hereto to enter into this Amendment, the Borrower represents and warrants to the Administrative Agent and the Banks that (i) the execution, delivery and performance of this Amendment has been duly authorized by all requisite corporate action on the part of the Borrower and that this Amendment has been duly executed and delivered by the Borrower and this Amendment and the Credit Agreement, as amended hereby, constitutes valid and binding obligations of the Borrower enforceable in accordance with its terms, (ii) no Default or Event of Default (after giving effect to this Amendment) has occurred and is continuing under the Credit Agreement or would result from the execution and delivery of this
Amendment, and (iii) each of the representations and warranties set forth in Section 5 of the Credit Agreement, as amended hereby, is true and correct in all material respects as of the date hereof, except that if any such representation or warranty relates solely to an earlier date it need only remain true as of such date.</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:justify;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=1>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:center;'><font size=2>2</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:right;'><font size=1>First Amendment</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>
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<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt; text-indent:0.3in;text-align:justify;'><font size=2>Section 6.  </font><u><font size=2>Severability</font></u><font size=2>.   Any provision of this Amendment held by a court of competent jurisdiction to be invalid or unenforceable shall not impair or invalidate the remainder of this Amendment and the effect thereof shall be confined to the provision so held to be invalid or unenforceable. </font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:justify;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt; text-indent:0.3in;text-align:justify;'><font size=2>Section 7.  </font><u><font size=2>References</font></u><font size=2>.  Any reference to the Credit Agreement contained in any document, instrument or agreement executed in connection with the Credit Agreement shall be deemed to be a reference to the Credit Agreement as modified by this Amendment.  </font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:justify;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt; text-indent:0.3in;text-align:justify;'><font size=2>Section 8.  </font><u><font size=2>Counterparts</font></u><font size=2>.  This Amendment may be executed in one or more counterparts, each of which shall constitute an original, but all of which taken together shall be one and the same instrument.  This Amendment may also be executed by facsimile or electronic means and each facsimile or electronic signature hereto shall be deemed for all purposes to be an original signatory page.</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:justify;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt; text-indent:0.3in;text-align:justify;'><font size=2>Section 9.  </font><u><font size=2>Costs</font></u><font size=2>.  The Borrower agrees to pay on demand all reasonable costs and expenses incurred by the Administrative Agent (including fees and expenses of counsel) incurred in connection with the negotiation and preparation of this Amendment or the syndication (whether incurred before or after the date hereof) of the Credit Agreement.</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:justify;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt; text-indent:0.3in;text-align:justify;'><font size=2>Section  10.&nbsp;&nbsp;&nbsp;</font><u><font size=2>Governing Law</font></u><font size=2>.  The validity and interpretation of this Amendment and the terms and conditions set forth herein, shall be governed by and construed in accordance with the laws of the State of New York, without giving effect to any provisions relating to conflict of laws other than section 5-1401 of the New York General Obligations Laws.</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:justify;'><font size=2>&nbsp;</font></p>


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            <p ><font size=2>Section 11.&nbsp;&nbsp;</font></p> </td>
        <td width="507" valign=top >
            <p ><u><font size=2>Miscellaneous</font></u><font size=2>.  This Amendment shall be deemed to be a Credit Document.</font></p> </td> </tr></table>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:justify;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:justify;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:center;'><i><font size=2>- Remainder of Page Left Blank; Signature Pages Follow -</font></i></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>


<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:center;'><font size=2>3</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:right;'><font size=1>First Amendment</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>
<br>
<HR noshade align="center" width="100%" size="2">
<p style='page-break-before:always'></p>
<pAGE>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:12pt; margin-top:0pt; text-indent:0.5in;text-align:justify;'><font size=2>In Witness Whereof, the parties hereto have caused this Agreement to be duly executed and delivered in New York, New York by their duly authorized officers as of the day and year first above written.</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:justify;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt; margin-left:3.5in;text-align:left;'><b><font SIZE=2>BLACK HILLS CORPORATION</font></b><font size=2>, a South Dakota corporation</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:justify;'><font size=2>&nbsp;</font></p>


<table border="0" cellspacing=0 cellpadding=0 width="208" style='margin-left:3.5in;border-collapse:collapse'>
    <tr >
        <td width="48" valign=top >
            <p ><font size=2>By:</font></p> </td>
        <td  colspan="2" valign=top >
            <p ><u><font size=2>/s/ Mark T. Thies</font></u></p> </td>
        <td  width="29">
            <p ><font size=1>&nbsp;</font></td> </tr>
    <tr >
        <td width="48" valign=top >
            <p ><font size=2>Name:</font></p> </td>
        <td width="111" valign=top >
            <p ><font size=2>Mark T. Thies</font></p> </td>
        <td   colspan="2">
            <p ><font size=1>&nbsp;</font></td> </tr>
    <tr >
        <td width="48" valign=top >
            <p ><font size=2>Title:</font></p> </td>
        <td  colspan="3" valign=top >
            <p ><font size=2>Executive VP &amp; CFO</font></p> </td> </tr>
    <tr>
        <td width="41" ></td>

        <td width="95" ></td>

        <td width="17" ></td>

        <td width="25" ></td> </tr> </table>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:justify;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'>
</p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:right;'><font size=1>First Amendment</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>
<br>
<HR noshade align="center" width="100%" size="2">
<p style='page-break-before:always'></p>
<pAGE>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:12pt; margin-top:0pt; text-indent:0.5in;text-align:justify;'><font size=2>In Witness Whereof, the parties hereto have caused this Amendment to be duly executed and delivered in New York, New York by their duly authorized officers as of the day and year first above written.</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:justify;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt; margin-left:3.5in;text-align:left;'><b><font SIZE=2>ABN AMRO BANK N.V.</font></b></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:justify;'><font size=2>&nbsp;</font></p>


<table border="0" cellspacing=0 cellpadding=0 width="151" style='margin-left:3.5in;border-collapse:collapse'>
    <tr >
        <td width="48" valign=top >
            <p ><font size=2>By:</font></p> </td>
        <td  colspan="3" valign=top >
            <p ><u><font size=2>/s/ Saad Qais</font></u></p> </td> </tr>
    <tr >
        <td width="48" valign=top >
            <p ><font size=2>Name:</font></p> </td>
        <td  colspan="2" valign=top >
            <p ><font size=2>Saad Qais</font></p> </td>
        <td  width="20">
            <p ><font size=1>&nbsp;</font></td> </tr>
    <tr >
        <td width="48" valign=top >
            <p ><font size=2>Title:</font></p> </td>
        <td width="72" valign=top >
            <p ><font size=2>Director</font></p> </td>
        <td   colspan="2">
            <p ><font size=1>&nbsp;</font></td> </tr>
    <tr>
        <td width="41" ></td>

        <td width="62" ></td>

        <td width="9" ></td>

        <td width="17" ></td> </tr> </table>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>


<table border="0" cellspacing=0 cellpadding=0 width="180" style='margin-left:3.5in;border-collapse:collapse'>
    <tr >
        <td width="48" valign=top >
            <p ><font size=2>By:</font></p> </td>
        <td  colspan="2" valign=top >
            <p ><u><font size=2>/s/ Yolanda Meza</font></u></p> </td> </tr>
    <tr >
        <td width="48" valign=top >
            <p ><font size=2>Name:</font></p> </td>
        <td width="113" valign=top >
            <p ><font size=2>Yolanda Meza</font></p> </td>
        <td  width="19">
            <p ><font size=1>&nbsp;</font></td> </tr>
    <tr >
        <td width="48" valign=top >
            <p ><font size=2>Title:</font></p> </td>
        <td width="113" valign=top >
            <p ><font size=2>Vice President</font></p> </td>
        <td  width="19">
            <p ><font size=1>&nbsp;</font></td> </tr></table>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt; margin-left:3.5in;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt; margin-left:3.5in;text-align:left;'><b><font size=2>Union Bank of California, N.A.</font></b></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:justify;'><font size=2>&nbsp;</font></p>


<table border="0" cellspacing=0 cellpadding=0 width="163" style='margin-left:3.5in;border-collapse:collapse'>
    <tr >
        <td width="48" valign=top >
            <p ><font size=2>By:</font></p> </td>
        <td  colspan="3" valign=top >
            <p ><u><font size=2>/s/ Bryan Read</font></u></p> </td> </tr>
    <tr >
        <td width="48" valign=top >
            <p ><font size=2>Name:</font></p> </td>
        <td width="95" valign=top >
            <p ><font size=2>Bryan Read</font></p> </td>
        <td   colspan="2">
            <p ><font size=1>&nbsp;</font></td> </tr>
    <tr >
        <td width="48" valign=top >
            <p ><font size=2>Title:</font></p> </td>
        <td  colspan="2" valign=top >
            <p ><font size=2>Vice President</font></p> </td>
        <td  width="1">
            <p ><font size=1>&nbsp;</font></td> </tr>
    <tr>
        <td width="41" ></td>

        <td width="81" ></td>

        <td width="16" ></td>

        <td width="1" ></td> </tr> </table>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt; margin-left:3.5in;text-align:left;'><b><font size=2>Bank of America</font></b></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:justify;'><font size=2>&nbsp;</font></p>


<table border="0" cellspacing=0 cellpadding=0 width="207" style='margin-left:3.5in;border-collapse:collapse'>
    <tr >
        <td width="48" valign=top >
            <p ><font size=2>By:</font></p> </td>
        <td  colspan="2" valign=top >
            <p ><u><font size=2>/s/ Kevin Wagley</font></u></p> </td>
        <td  width="28">
            <p ><font size=1>&nbsp;</font></td> </tr>
    <tr >
        <td width="48" valign=top >
            <p ><font size=2>Name:</font></p> </td>
        <td width="112" valign=top >
            <p ><font size=2>Kevin Wagley</font></p> </td>
        <td   colspan="2">
            <p ><font size=1>&nbsp;</font></td> </tr>
    <tr >
        <td width="48" valign=top >
            <p ><font size=2>Title:</font></p> </td>
        <td  colspan="3" valign=top >
            <p ><font size=2>Senior Vice President</font></p> </td> </tr>
    <tr>
        <td width="41" ></td>

        <td width="96" ></td>

        <td width="16" ></td>

        <td width="24" ></td> </tr> </table>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt; margin-left:3.5in;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt; margin-left:3.5in;text-align:left;'><b><font size=2>CoBank, ACB</font></b></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:justify;'><font size=2>&nbsp;</font></p>


<table border="0" cellspacing=0 cellpadding=0 width="163" style='margin-left:3.5in;border-collapse:collapse'>
    <tr >
        <td width="48" valign=top >
            <p ><font size=2>By:</font></p> </td>
        <td  colspan="3" valign=top >
            <p ><u><font size=2>/s/ John Guilds</font></u></p> </td> </tr>
    <tr >
        <td width="48" valign=top >
            <p ><font size=2>Name:</font></p> </td>
        <td width="96" valign=top >
            <p ><font size=2>John Guilds</font></p> </td>
        <td   colspan="2">
            <p ><font size=1>&nbsp;</font></td> </tr>
    <tr >
        <td width="48" valign=top >
            <p ><font size=2>Title:</font></p> </td>
        <td  colspan="2" valign=top >
            <p ><font size=2>Vice President</font></p> </td>
        <td  width="1">
            <p ><font size=1>&nbsp;</font></td> </tr>
    <tr>
        <td width="41" ></td>

        <td width="82" ></td>

        <td width="15" ></td>

        <td width="1" ></td> </tr> </table>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt; margin-left:3.5in;text-align:left;'><b><font SIZE=2>HARRIS NESBITT FINANCINGS, INC.</font></b></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:justify;'><font size=2>&nbsp;</font></p>


<table border="0" cellspacing=0 cellpadding=0 width="187" style='margin-left:3.5in;border-collapse:collapse'>
    <tr >
        <td width="48" valign=top >
            <p ><font size=2>By:</font></p> </td>
        <td  colspan="3" valign=top >
            <p ><u><font size=2>/s/ Cahal Carmody</font></u></p> </td> </tr>
    <tr >
        <td width="48" valign=top >
            <p ><font size=2>Name:</font></p> </td>
        <td  colspan="2" valign=top >
            <p ><font size=2>Cahal Carmody</font></p> </td>
        <td  width="19">
            <p ><font size=1>&nbsp;</font></td> </tr>
    <tr >
        <td width="48" valign=top >
            <p ><font size=2>Title:</font></p> </td>
        <td width="113" valign=top >
            <p ><font size=2>Vice President</font></p> </td>
        <td   colspan="2">
            <p ><font size=1>&nbsp;</font></td> </tr>
    <tr>
        <td width="41" ></td>

        <td width="97" ></td>

        <td width="6" ></td>

        <td width="16" ></td> </tr> </table>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'>
</p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:right;'><font size=2>Credit Agreement</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>
<br>
<HR noshade align="center" width="100%" size="2">
<p style='page-break-before:always'></p>
<pAGE>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt; margin-left:3.5in; text-indent:-3.33in;text-align:justify;'><b><font SIZE=2>SIGNATURES CONTINUED</font></b></p>

<p style=' margin-bottom:0pt; margin-top:0pt; margin-left:3.5in; text-indent:-3.33in;text-align:justify;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt; margin-left:3.5in;text-align:left;'><b><font SIZE=2>THE BANK OF NOVA SCOTIA</font></b></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:justify;'><font size=2>&nbsp;</font></p>


<table border="0" cellspacing=0 cellpadding=0 width="189" style='margin-left:3.5in;border-collapse:collapse'>
    <tr >
        <td width="48" valign=top >
            <p ><font size=2>By:</font></p> </td>
        <td  colspan="2" valign=top >
            <p ><u><font size=2>/s/ Thane Rattew</font></u></p> </td>
        <td  width="15">
            <p ><font size=1>&nbsp;</font></td> </tr>
    <tr >
        <td width="48" valign=top >
            <p ><font size=2>Name:</font></p> </td>
        <td width="108" valign=top >
            <p ><font size=2>Thane Rattew</font></p> </td>
        <td   colspan="2">
            <p ><font size=1>&nbsp;</font></td> </tr>
    <tr >
        <td width="48" valign=top >
            <p ><font size=2>Title:</font></p> </td>
        <td  colspan="3" valign=top >
            <p ><font size=2>Managing Director</font></p> </td> </tr>
    <tr>
        <td width="41" ></td>

        <td width="92" ></td>

        <td width="16" ></td>

        <td width="13" ></td> </tr> </table>

<p style=' margin-bottom:0pt; margin-top:0pt; margin-left:3.5in;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt; margin-left:3.5in;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt; margin-left:3.5in;text-align:left;'><b><font size=2>Wells Fargo Bank, N.A.</font></b></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:justify;'><font size=2>&nbsp;</font></p>


<table border="0" cellspacing=0 cellpadding=0 width="161" style='margin-left:3.5in;border-collapse:collapse'>
    <tr >
        <td width="48" valign=top >
            <p ><font size=2>By:</font></p> </td>
        <td  colspan="2" valign=top >
            <p ><u><font size=2>/s/ Duc Duong</font></u></p> </td>
        <td  width="1">
            <p ><font size=1>&nbsp;</font></td> </tr>
    <tr >
        <td width="48" valign=top >
            <p ><font size=2>Name:</font></p> </td>
        <td width="93" valign=top >
            <p ><font size=2>Duc Duong</font></p> </td>
        <td   colspan="2">
            <p ><font size=1>&nbsp;</font></td> </tr>
    <tr >
        <td width="48" valign=top >
            <p ><font size=2>Title:</font></p> </td>
        <td  colspan="3" valign=top >
            <p ><font size=2>Vice President</font></p> </td> </tr>
    <tr>
        <td width="41" ></td>

        <td width="80" ></td>

        <td width="16" ></td>

        <td width="1" ></td> </tr> </table>

<p style=' margin-bottom:0pt; margin-top:0pt; margin-left:3.5in;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt; margin-left:3.5in;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt; margin-left:3.5in;text-align:left;'><b><font size=2>Societe Generale</font></b></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:justify;'><font size=2>&nbsp;</font></p>


<table border="0" cellspacing=0 cellpadding=0 width="199" style='margin-left:3.5in;border-collapse:collapse'>
    <tr >
        <td width="48" valign=top >
            <p ><font size=2>By:</font></p> </td>
        <td  colspan="3" valign=top >
            <p ><u><font size=2>/s/ R. Wayne Hutton</font></u></p> </td> </tr>
    <tr >
        <td width="48" valign=top >
            <p ><font size=2>Name:</font></p> </td>
        <td width="131" valign=top >
            <p ><font size=2>R. Wayne Hutton</font></p> </td>
        <td   colspan="2">
            <p ><font size=1>&nbsp;</font></td> </tr>
    <tr >
        <td width="48" valign=top >
            <p ><font size=2>Title:</font></p> </td>
        <td  colspan="2" valign=top >
            <p ><font size=2>Managing Director</font></p> </td>
        <td  width="9">
            <p ><font size=1>&nbsp;</font></td> </tr>
    <tr>
        <td width="41" ></td>

        <td width="112" ></td>

        <td width="9" ></td>

        <td width="8" ></td> </tr> </table>

<p style=' margin-bottom:0pt; margin-top:0pt; margin-left:3.5in;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt; margin-left:3.5in;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt; margin-left:3.5in;text-align:left;'><b><font SIZE=2>CALYON NEW YORK BRANCH</font></b></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:justify;'><font size=2>&nbsp;</font></p>


<table border="0" cellspacing=0 cellpadding=0 width="221" style='margin-left:3.5in;border-collapse:collapse'>
    <tr >
        <td width="48" valign=top >
            <p ><font size=2>By:</font></p> </td>
        <td  colspan="3" valign=top >
            <p ><u><font size=2>/s/ Martin C. Livingston</font></u></p> </td> </tr>
    <tr >
        <td width="48" valign=top >
            <p ><font size=2>Name:</font></p> </td>
        <td  colspan="2" valign=top >
            <p ><font size=2>Martin C. Livingston</font></p> </td>
        <td  width="19">
            <p ><font size=1>&nbsp;</font></td> </tr>
    <tr >
        <td width="48" valign=top >
            <p ><font size=2>Title:</font></p> </td>
        <td width="141" valign=top >
            <p ><font size=2>Managing Director</font></p> </td>
        <td   colspan="2">
            <p ><font size=1>&nbsp;</font></td> </tr>
    <tr>
        <td width="41" ></td>

        <td width="121" ></td>

        <td width="11" ></td>

        <td width="16" ></td> </tr> </table>

<p style=' margin-bottom:0pt; margin-top:0pt; margin-left:3.5in;text-align:left;'><font size=2>&nbsp;</font></p>


<table border="0" cellspacing=0 cellpadding=0 width="179" style='margin-left:3.5in;border-collapse:collapse'>
    <tr >
        <td width="48" valign=top >
            <p ><font size=2>By:</font></p> </td>
        <td  colspan="3" valign=top >
            <p ><u><font size=2>/s/ Omer Balaban</font></u></p> </td> </tr>
    <tr >
        <td width="48" valign=top >
            <p ><font size=2>Name:</font></p> </td>
        <td width="112" valign=top >
            <p ><font size=2>Omer Balaban</font></p> </td>
        <td   colspan="2">
            <p ><font size=1>&nbsp;</font></td> </tr>
    <tr >
        <td width="48" valign=top >
            <p ><font size=2>Title:</font></p> </td>
        <td  colspan="2" valign=top >
            <p ><font size=2>Vice President</font></p> </td>
        <td  width="17">
            <p ><font size=1>&nbsp;</font></td> </tr>
    <tr>
        <td width="41" ></td>

        <td width="96" ></td>

        <td width="1" ></td>

        <td width="15" ></td> </tr> </table>

<p style=' margin-bottom:0pt; margin-top:0pt; margin-left:3.5in;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt; margin-left:3.5in;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt; margin-left:3.5in;text-align:left;'><b><font size=2>Fifth Third Bank</font></b></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:justify;'><font size=2>&nbsp;</font></p>


<table border="0" cellspacing=0 cellpadding=0 width="224" style='margin-left:3.5in;border-collapse:collapse'>
    <tr >
        <td width="48" valign=top >
            <p ><font size=2>By:</font></p> </td>
        <td  colspan="2" valign=top >
            <p ><u><font size=2>/s/ Andrew D. Jones</font></u></p> </td>
        <td  width="27">
            <p ><font size=1>&nbsp;</font></td> </tr>
    <tr >
        <td width="48" valign=top >
            <p ><font size=2>Name:</font></p> </td>
        <td width="131" valign=top >
            <p ><font size=2>Andrew D. Jones</font></p> </td>
        <td   colspan="2">
            <p ><font size=1>&nbsp;</font></td> </tr>
    <tr >
        <td width="48" valign=top >
            <p ><font size=2>Title:</font></p> </td>
        <td  colspan="3" valign=top >
            <p ><font size=2>Assistant Vice President</font></p> </td> </tr>
    <tr>
        <td width="41" ></td>

        <td width="112" ></td>

        <td width="16" ></td>

        <td width="23" ></td> </tr> </table>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt; margin-left:3.5in;text-align:left;'><font size=2>&nbsp;</font></p>

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</p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:right;'><font size=2>Credit Agreement</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>
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<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt; margin-left:3.5in; text-indent:-3.33in;text-align:justify;'><b><font SIZE=2>SIGNATURES CONTINUED</font></b></p>

<p style=' margin-bottom:0pt; margin-top:0pt; margin-left:3.5in; text-indent:-3.33in;text-align:justify;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt; margin-left:3.5in;text-align:left;'><b><font SIZE=2>ROYAL BANK OF CANADA</font></b></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:justify;'><font size=2>&nbsp;</font></p>


<table border="0" cellspacing=0 cellpadding=0 width="223" style='margin-left:3.5in;border-collapse:collapse'>
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            <p ><font size=2>By:</font></p> </td>
        <td  colspan="3" valign=top >
            <p ><u><font size=2>/s/ David A. McCluskey</font></u></p> </td> </tr>
    <tr >
        <td width="48" valign=top >
            <p ><font size=2>Name:</font></p> </td>
        <td width="155" valign=top >
            <p ><font size=2>David A. McCluskey</font></p> </td>
        <td   colspan="2">
            <p ><font size=1>&nbsp;</font></td> </tr>
    <tr >
        <td width="48" valign=top >
            <p ><font size=2>Title:</font></p> </td>
        <td  colspan="2" valign=top >
            <p ><font size=2>Authorized Signatory</font></p> </td>
        <td  width="17">
            <p ><font size=1>&nbsp;</font></td> </tr>
    <tr>
        <td width="41" ></td>

        <td width="132" ></td>

        <td width="2" ></td>

        <td width="15" ></td> </tr> </table>

<p style=' margin-bottom:0pt; margin-top:0pt; margin-left:3.5in; text-indent:-3.33in;text-align:justify;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt; margin-left:3.5in; text-indent:-3.33in;text-align:justify;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt; margin-left:3.5in;text-align:left;'><b><font size=2>U.S. Bank National Association</font></b></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:justify;'><font size=2>&nbsp;</font></p>


<table border="0" cellspacing=0 cellpadding=0 width="224" style='margin-left:3.5in;border-collapse:collapse'>
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            <p ><font size=2>By:</font></p> </td>
        <td  colspan="3" valign=top >
            <p ><u><font size=2>/s/ Christopher W. Rupp</font></u></p> </td> </tr>
    <tr >
        <td width="48" valign=top >
            <p ><font size=2>Name:</font></p> </td>
        <td  colspan="2" valign=top >
            <p ><font size=2>Christopher W. Rupp</font></p> </td>
        <td  width="20">
            <p ><font size=1>&nbsp;</font></td> </tr>
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        <td width="48" valign=top >
            <p ><font size=2>Title:</font></p> </td>
        <td width="113" valign=top >
            <p ><font size=2>Vice President</font></p> </td>
        <td   colspan="2">
            <p ><font size=1>&nbsp;</font></td> </tr>
    <tr>
        <td width="41" ></td>

        <td width="97" ></td>

        <td width="36" ></td>

        <td width="17" ></td> </tr> </table>

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<p style=' margin-bottom:0pt; margin-top:0pt; margin-left:3.5in; text-indent:-3.33in;text-align:justify;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt; margin-left:3.5in;text-align:left;'><b><font SIZE=2>MIZUHO CORPORATE BANK LTD</font></b></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:justify;'><font size=2>&nbsp;</font></p>


<table border="0" cellspacing=0 cellpadding=0 width="229" style='margin-left:3.5in;border-collapse:collapse'>
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            <p ><font size=2>By:</font></p> </td>
        <td  colspan="2" valign=top >
            <p ><u><font size=2>/s/ Raymond Ventura</font></u></p> </td>
        <td  width="25">
            <p ><font size=1>&nbsp;</font></td> </tr>
    <tr >
        <td width="48" valign=top >
            <p ><font size=2>Name:</font></p> </td>
        <td width="137" valign=top >
            <p ><font size=2>Raymond Ventura</font></p> </td>
        <td   colspan="2">
            <p ><font size=1>&nbsp;</font></td> </tr>
    <tr >
        <td width="48" valign=top >
            <p ><font size=2>Title:</font></p> </td>
        <td  colspan="3" valign=top >
            <p ><font size=2>Deputy General Manager</font></p> </td> </tr>
    <tr>
        <td width="41" ></td>

        <td width="117" ></td>

        <td width="16" ></td>

        <td width="22" ></td> </tr> </table>

<p style=' margin-bottom:0pt; margin-top:0pt; margin-left:3.5in;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt; margin-left:3.5in;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:justify;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:right;'><font size=2>Credit Agreement</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>


<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>


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<p style=' margin-bottom:12pt; margin-top:0pt;text-align:center;'><u><b><font SIZE=2>SECOND AMENDMENT TO THE CREDIT AGREEMENT</font></b></u></p>

<p style=' margin-bottom:12pt; margin-top:0pt; text-indent:0.5in;text-align:justify;'><b><font SIZE=2>THIS SECOND AMENDMENT TO THE CREDIT AGREEMENT </font></b><font size=2>(this &#147;</font><i><font size=2>Amendment</font></i><font size=2>&#148;),</font><b><font size=2> </font></b><font size=2>dated as of March 13, 2007 among Black Hills Corporation, a South Dakota corporation (</font><i><font size=2>&#147;Borrower&#148;</font></i><font size=2>)</font><i><font size=2>, </font></i><font size=2>ABN AMRO Bank N.V., in its capacity as agent for the Banks under the Credit Agreement described below (in such capacity, the </font><i><font size=2>&#147;Administrative Agent&#148;)</font></i><font size=2>, and as a Bank,</font><i><font size=2> </font></i><font size=2>and the other Banks party hereto</font><i><font size=2>.</font></i></p>

<p style=' margin-bottom:12pt; margin-top:0pt;text-align:center;'><b><font SIZE=2>WITNESSETH THAT:</font></b></p>

<p style=' margin-bottom:12pt; margin-top:0pt; text-indent:0.5in;text-align:justify;'><b><font SIZE=2>WHEREAS</font></b><font size=2>, the Borrower, Administrative Agent and the Banks have entered into that certain Credit Agreement dated as of May 5, 2005 (as the same has been amended, modified or restated prior to the effectiveness hereof, the </font><i><b><font size=2>&#147;</font></b><font size=2>Credit Agreement</font><b><font size=2>&#148;</font></b></i><font size=2>);</font><b><font size=2> </font></b><font size=2>and</font></p>

<p style=' margin-bottom:12pt; margin-top:0pt; text-indent:0.5in;text-align:justify;'><b><font SIZE=2>WHEREAS, </font></b><font size=2>the Borrower desires to amend certain terms of the Credit Agreement, as set forth below; and</font></p>

<p style=' margin-bottom:12pt; margin-top:0pt; text-indent:0.5in;text-align:justify;'><b><font SIZE=2>WHEREAS,</font></b><font size=2> the Administrative Agent and the Banks are willing, subject to the terms hereof, to so amend the Credit Agreement.</font></p>

<p style=' margin-bottom:12pt; margin-top:0pt; text-indent:0.5in;text-align:justify;'><b><font SIZE=2>NOW, THEREFORE, </font></b><font size=2>in consideration of the recitals set forth above and for other good and valuable consideration, the receipt and adequacy of which are hereby acknowledged, the parties hereto hereby agree as follows:</font></p>

<p style=' margin-bottom:12pt; margin-top:0pt; text-indent:0.5in;text-align:justify;'><font size=2>Section 1.  </font><u><font size=2>Definitions</font></u><font size=2>.  All capitalized terms used but not otherwise defined in this Amendment shall have the meaning ascribed to them in the Credit Agreement.  Unless otherwise specified, all section references herein refer to sections of the Credit Agreement.</font></p>

<p style=' margin-bottom:12pt; margin-top:0pt; text-indent:0.5in;text-align:justify;'><font size=2>Section 2.  </font><u><font size=2>Amendments to Credit Agreement</font></u><font size=2>.  </font></p>

<p style=' margin-bottom:12pt; margin-top:0pt; text-indent:0.32in;text-align:justify;'><font size=2>Effective upon the satisfaction of each of the conditions precedent set forth in </font><u><font size=2>Section 4</font></u><font size=2> below, the Administrative Agent, the Borrower and the Banks party hereto hereby agree to amend the Credit Agreement as follows: </font></p>


<table border="0" cellspacing=0 cellpadding=0 width="572" style='margin-left:21.95pt;border-collapse:collapse'>
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            <p ><font size=2>(a)</font></p> </td>
        <td width="553" valign=top style='padding:0in 0in 12.0pt 0in'>
            <p ><font size=2>effective as of the date hereof, the Credit Agreement is hereby amended as follows:</font></p> </td> </tr></table>

<p style=' margin-bottom:12pt; margin-top:0pt; text-indent:1in;text-align:justify;'><font size=2>(i)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The following definitions and defined terms are hereby added to Section 1.1 of the Credit Agreement in the appropriate alphabetical order:</font></p>

<p style=' margin-bottom:12pt; margin-top:0pt; margin-left:0.5in; text-indent:0.5in;text-align:justify;'><i><font size=2>&#147;Agreement and Plan of Merger&#148;</font></i><font size=2> means that certain Agreement and Plan of Merger dated as of February 6, 2007 by and among Gregory Acquisition Corp., a Delaware corporation, Great Plains Energy Incorporated, a Missouri corporation and Borrower, as such agreement may be amended in accordance with the terms thereof.</font></p>

<p style=' margin-bottom:12pt; margin-top:0pt; margin-left:0.5in; text-indent:0.54in;text-align:justify;'><i><font size=2> &#147;Aquila Agreements&#148; </font></i><font size=2>means (i) the Asset Purchase Agreement, (ii) the Partnership Interests Purchase Agreement, (iii) the Agreement and Plan of Merger, and </font></p>

<p style=' margin-bottom:0pt; margin-top:0pt; margin-left:0.5in;text-align:justify;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font SIZE=1>CHI02_60538035_7_209611_00011</font></p>

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<p style=' margin-bottom:12pt; margin-top:0pt; margin-left:0.5in;text-align:justify;'><font size=2>(iv) all deliveries, agreements and other documents delivered or executed in connection with any of the foregoing.</font></p>

<p style=' margin-bottom:12pt; margin-top:0pt; margin-left:0.5in; text-indent:0.54in;text-align:justify;'><i><font size=2> &#147;Aquila Assets&#148; </font></i><font size=2>means the &#147;Purchased Assets&#148; and the &#147;Colorado Assets&#148; as such terms are defined in the Asset Purchase Agreement and the &#147;Company Interest&#148; as such term is defined in the Partnership Interest Purchase Agreement.</font></p>

<p style=' margin-bottom:12pt; margin-top:0pt; margin-left:0.5in; text-indent:0.54in;text-align:justify;'><i><font size=2> &#147;Aquila Asset Purchase Agreement&#148;</font></i><font size=2> means that certain Asset Purchase Agreement dated as of February 6, 2007 by and among Gregory Acquisition Corp., a Delaware corporation, Great Plains Energy Incorporated, a Missouri corporation, the Borrower and Aquila, Inc., a Delaware corporation, as such agreement may be amended in accordance with the terms thereof.</font></p>

<p style=' margin-bottom:12pt; margin-top:0pt; margin-left:0.5in; text-indent:0.54in;text-align:justify;'><i><font size=2> &#147;Aquila Credit Agreement&#148; </font></i><font size=2>means that certain Credit Agreement dated as of </font><i><b><font size=2>[March 13]</font></b></i><font size=2>, 2007 by and among, </font><i><font size=2>inter alia</font></i><font size=2>, ABN AMRO, as Administrative Agent, Borrower and the various financial institutions party thereto as &#147;Banks,&#148; as amended, supplemented or otherwise modified from time to time in accordance with the terms thereof.</font></p>

<p style=' margin-bottom:12pt; margin-top:0pt; margin-left:0.5in; text-indent:0.54in;text-align:justify;'><i><font size=2> &#147;Aquila Effective Date&#148;</font></i><font size=2> means the date upon which the Aquila Transactions are consummated in accordance with the terms of the Aquila Agreements.</font></p>

<p style=' margin-bottom:12pt; margin-top:0pt; margin-left:0.5in; text-indent:0.54in;text-align:justify;'><i><font size=2> &#147;Aquila Transactions&#148; </font></i><font size=2>means the transactions contemplated by the terms of the Aquila Agreements.</font></p>

<p style=' margin-bottom:12pt; margin-top:0pt; margin-left:0.5in; text-indent:0.54in;text-align:justify;'><i><font size=2> &#147;Partnership Interests Purchase Agreement&#148;</font></i><font size=2> means that certain Partnership Interests Purchase Agreement dated as of February 6, 2007 by and among Gregory Acquisition Corp., a Delaware corporation, Great Plains Energy Incorporated, a Missouri corporation, the Borrower, Aquila Colorado, LLC, a Delaware limited liability company and, Aquila, Inc., a Delaware corporation, as such agreement may be amended in accordance with the terms thereof.</font></p>

<p style=' margin-bottom:12pt; margin-top:0pt; text-indent:1in;text-align:justify;'><font size=2>(ii)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The definition of &#147;PUCHA&#148; appearing in Section 1.1 of the Credit Agreement is hereby deleted in its entirety and the following defined term is hereby substituted therefor:</font></p>

<p style=' margin-bottom:12pt; margin-top:0pt; text-indent:1in;text-align:justify;'><i><font size=2>&#147;PUCHA&#148;</font></i><font size=2> means the Public Utility Holding Company Act of 2005, as amended.</font></p>

<p style=' margin-bottom:12pt; margin-top:0pt; text-indent:1in;text-align:justify;'><font size=2>(iii)&nbsp;&nbsp;&nbsp;&nbsp;The phrase &#147;to accommodate an increase in the borrowings thereunder from $200,000,000 to $260,000,000&#148; appearing in the definition of &#147;Marketing Subsidiary Excluded Credit Facilities&#148; in Section 1.1 of the Credit Agreement is hereby deleted in its entirety and the following language is hereby substituted therefor:</font></p>

<p style=' margin-bottom:12pt; margin-top:0pt; margin-left:1in;text-align:justify;'><font size=2>&#147;to (x) accommodate an increase in the borrowings or other credit accommodations thereunder to $300,000,000, and (y) permit such credit facility to be either asset-based or non-asset-based (whether secured or unsecured).&#148;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:center;'><font size=2>2</font></p>

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<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:12pt; margin-top:0pt; text-indent:1in;text-align:justify;'><font size=2>(iv)&nbsp;&nbsp;&nbsp;&nbsp;The term &#147;$500,000,000&#148; appearing in Section 2.12(b) of the Credit Agreement is hereby deleted in its entirety and the term &#147;$600,000,000&#148; is hereby substituted therefor.</font></p>

<p style=' margin-bottom:12pt; margin-top:0pt; text-indent:1in;text-align:justify;'><font size=2>(v)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Section 5.9(b) of the Credit Agreement is hereby deleted in its entirety and the term &#147;Reserved&#148; is hereby substituted therefor.</font></p>

<p style=' margin-bottom:12pt; margin-top:0pt; text-indent:1in;text-align:justify;'><font size=2>(vi)&nbsp;&nbsp;&nbsp;&nbsp;Section 7.12(a) of the Credit Agreement shall be amended by inserting the following language as clause (v) thereof, which shall appear immediately preceding the existing clause (w) thereof:</font></p>

<p style=' margin-bottom:12pt; margin-top:0pt; margin-left:0.5in; text-indent:0.84in;text-align:justify;'><font size=2> (v)&nbsp;&nbsp;&nbsp;&nbsp;the foregoing shall not prohibit any sale, lease, transfer or disposition of assets , other than equity interests in or the assets of Black Hills Power, Inc. and Cheyenne Light, Fuel and Power Company,  solely to the extent and so long as (A) such transaction does not result in a downgrade of Borrower&#146;s S&amp;P Rating or Borrower&#146;s Moody&#146;s Rating, (B) such transaction is for cash consideration (or other consideration acceptable to the Required Banks) in an amount not less than the fair market value of the applicable assets, (C) such transaction, when combined with all other such transactions, would not have a Material Adverse Effect, taken as a whole, and (D) such transaction is consummated (and all consideration therefore is received by Borrower or its applicable Subsidiary) on or before the date which is eighteen (18)
months after the Aquila Effective Date.</font></p>

<p style=' margin-bottom:12pt; margin-top:0pt; text-indent:1in;text-align:justify;'><font size=2>(vii)&nbsp;&nbsp;&nbsp;&nbsp;Section 7.14 of the Credit Agreement is hereby amended by deleting the term &#147;and&#148; appearing at the end of Section 7.14(o), re-labeling Section 7.14(p) as new Section 7.14(q) and inserting the following language as new Section 7.14(p):</font></p>

<p style=' margin-bottom:12pt; margin-top:0pt; margin-left:0.5in; text-indent:0.84in;text-align:justify;'><font size=2> (p)&nbsp;&nbsp;&nbsp;&nbsp;to the extent it constitutes an Investment, consummation of the Aquila Transactions in accordance with the terms of the Aquila Agreements; and</font></p>

<p style=' margin-bottom:12pt; margin-top:0pt; text-indent:0.34in;text-align:justify;'><font size=2> (b)&nbsp;&nbsp;&nbsp;&nbsp;Effective as of the &#147;Aquila Effective Date&#148; (as such term is defined in the Credit Agreement after giving effect to the amendments thereto set forth in </font><u><font size=2>Section 2(a)</font></u><font size=2> above), the Credit Agreement shall automatically be amended as follows: </font></p>

<p style=' margin-bottom:12pt; margin-top:0pt; text-indent:0.84in;text-align:justify;'><font size=2> (i) Clause (v) of Section 7.8 of the Credit Agreement shall be deleted in its entirety and the following language shall be substituted therefor:</font></p>

<p style=' margin-bottom:12pt; margin-top:0pt; margin-left:0.5in;text-align:justify;'><font size=2>utility ownership, operation and management, including the provision of services reasonably ancillary thereto, such as gas services and call centers.</font></p>

<p style=' margin-bottom:12pt; margin-top:0pt; text-indent:0.84in;text-align:justify;'><font size=2> (ii)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Section 7.9 of the Credit Agreement shall be amended by deleting the term &#147;and&#148; appearing at the end of Section 7.9(l), re-labeling Section 7.9(m) as new Section 7.9(o) and inserting the following language as new Sections 7.9(m) and (n), respectively:</font></p>

<p style=' margin-bottom:12pt; margin-top:0pt; margin-left:0.5in; text-indent:0.84in;text-align:justify;'><font size=2> (m)&nbsp;&nbsp;&nbsp;&nbsp;Liens on the Aquila Assets which exist on the Aquila Effective Date, other than &#147;Non-Permitted Encumbrances&#148; (as such term is defined in the Asset Purchase Agreement and Partnership Interests Purchase Agreement);</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:center;'><font size=2>3</font></p>

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<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:12pt; margin-top:0pt; margin-left:0.5in; text-indent:0.55in;text-align:justify;'><font size=2> (n)</font><font size=1>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</font><font size=2>Liens on the Aquila Assets consisting of first mortgage bonds which secure Indebtedness of the type specifically permitted pursuant to Section 7.15(i), which Liens are incurred on or before a date which is eighteen (18) months after the Aquila Effective Date; and</font></p>

<p style=' margin-bottom:12pt; margin-top:0pt; text-indent:0.84in;text-align:justify;'><font size=2> (iii)&nbsp;&nbsp;&nbsp;&nbsp;Section 7.15 of the Credit Agreement shall be amended by deleting the term &#147;and&#148; appearing at the end of Section 7.15(h), re-labeling Section 7.15(i) as new Section 7.15(k) and inserting the following language as new Sections 7.15(i) and (j), respectively:</font></p>

<p style=' margin-bottom:12pt; margin-top:0pt; margin-left:0.5in; text-indent:0.84in;text-align:justify;'><font size=2> (i)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(A) solely to the extent the incurrence or maintenance of such Indebtedness could not reasonably be expected to otherwise cause a Default or Event of Default to occur or continue, Indebtedness (x) incurred on or before a date which is eighteen (18) months after the Aquila Effective Date to finance or refinance the Aquila Assets and (y) consisting of first mortgage bond Indebtedness (which is secured only by Liens of the type specifically permitted pursuant to Section 7.9(n)), it being agreed and acknowledged by Borrower that Indebtedness incurred pursuant to this clause (i) shall be deemed &#147;Recourse Indebtedness&#148; hereunder and (B) Indebtedness assumed in connection with the Aquila Transactions, provided such Indebtedness under this clause (B) was not incurred to finance the acquisition of the Aquila Transactions; and </font></p>

<p style=' margin-bottom:12pt; margin-top:0pt; margin-left:0.5in; text-indent:0.84in;text-align:justify;'><font size=2> (j)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;from and after the Aquila Effective Date, Indebtedness outstanding under the Aquila Credit Agreement and any credit agreement entered into by and among, inter alia, the &#147;Banks&#148; party thereto from time to time and Borrower which refinances the Aquila Credit Agreement; and</font></p>

<p style=' margin-bottom:12pt; margin-top:0pt; text-indent:0.84in;text-align:justify;'><font size=2> (iv)&nbsp;&nbsp;&nbsp;&nbsp;Section 7.17 of the Credit Agreement shall be deleted in its entirety and the following language shall be substituted therefor:</font></p>

<p style=' margin-bottom:12pt; margin-top:0pt; margin-left:0.5in; text-indent:1in;text-align:justify;'><font size=2>Section 7.17&nbsp;&nbsp;</font><i><font size=2>Recourse Leverage Ratio</font></i><font size=2>.  Borrower will not at the end of any fiscal quarter permit the Recourse Leverage Ratio to exceed, with respect to any fiscal quarter ending in the period (x) from the Aquila Effective Date until the one (1) year anniversary thereof, 0.70 to 1.00, or (y) thereafter, 0.65 to 1.00.</font></p>

<p style=' margin-bottom:12pt; margin-top:0pt; text-indent:0.84in;text-align:justify;'><font size=2> (v)&nbsp;&nbsp;&nbsp;&nbsp;Section 7.20 of the Credit Agreement shall be deleted in its entirety and the following language shall be substituted therefor:</font></p>

<p style=' margin-bottom:12pt; margin-top:0pt; margin-left:0.5in; text-indent:1.32in;text-align:justify;'><font size=2>Section 7.20&nbsp;&nbsp;</font><i><font size=2>No Negative Pledge</font></i><font size=2>.  Except (i) as set forth on </font><b><font size=2>Schedule 7.19</font></b><font size=2>, (ii) in connection with Non-Recourse Indebtedness of a Project Finance Subsidiary, the Borrower will not, and will not permit any of its Subsidiaries (other than Project Finance Subsidiaries), and (iii) as in existence with respect to the Aquila Assets as of the Aquila Effective Date, directly or indirectly to enter into or assume any agreement (other than customary non-assignment and no sub-letting provisions in leases consistent with Borrower&#146;s past practices and the Credit Documents and, solely with respect to the asset so financed, Capitalized Leases, to the extent such Indebtedness is permitted herein) prohibiting the creation or assumption of any Lien upon its properties or
assets, whether now owned or hereafter acquired.</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:center;'><font size=2>4</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=1>&nbsp;</font></p>
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<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:12pt; margin-top:0pt; text-indent:0.84in;text-align:justify;'><font size=2> (vi)&nbsp;&nbsp;&nbsp;&nbsp;the term &#147;0.65&#148; appearing in Exhibit B to the Credit Agreement is hereby deleted in its entirety and the phrase &#147;</font><i><b><font size=2>[0.70/0.65]</font></b></i><font size=2>&#148; is hereby substituted therefor.</font></p>

<p style=' margin-bottom:12pt; margin-top:0pt; text-indent:0.84in;text-align:justify;'><font size=2> (vii)&nbsp;&nbsp;&nbsp;Schedules 5.2 (Existing Subsidiaries), 5.5 (Litigation and Labor Controversies) and 5.11 (Environmental Matters) to the Credit Agreement shall be supplemented  to include additional information with respect thereto that arises solely as a result of the ownership by Borrower and its Subsidiaries of the Aquila Assets; </font><u><font size=2>provided</font></u><font size=2>, such supplemental information shall be delivered in writing by Borrower to the Administrative Agent no later than 30 days after the Aquila Effective Date (or such other, later date as may be agreed to by the Administrative Agent).</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt; text-indent:0.5in;text-align:justify;'><font size=2>Section 3.  </font><u><font size=2>Ratification</font></u><font size=2>.  The Borrower hereby ratifies, acknowledges, affirms and reconfirms its rights, interests and obligations under each Credit Document, as amended hereby,  and agrees to perform each of its obligations thereunder as and when required.  By executing this Amendment, the Borrower hereby further ratifies, acknowledges, affirms and reconfirms that each Credit Document, as amended hereby, constitutes a legal, valid and binding obligation of the Borrower enforceable against the Borrower in accordance with its terms, and that each such Credit Document, as amended hereby, is in full force and effect.</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt; text-indent:0.5in;text-align:justify;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt; text-indent:0.5in;text-align:justify;'><font size=2>Section 4.  </font><u><font size=2>Conditions</font></u><font size=2>.  The effectiveness of this Amendment is subject to the following conditions precedent:</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt; text-indent:0.5in;text-align:justify;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt; text-indent:0.6in;text-align:justify;'><font size=2>Section 4.1  The Borrower, the Administrative Agent and the Required Banks shall have executed and delivered this Amendment, and the Borrower shall have executed and/or delivered such other documents and instruments as Administrative Agent may reasonably require.</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:justify;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt; text-indent:0.6in;text-align:justify;'><font size=2>Section 4.2  The Administrative Agent shall have received from the Borrower for </font><i><font size=2>pro rata</font></i><font size=2> distribution to the Banks executing and delivering this Amendment on or prior to the date hereof based on their respective Percentage</font><i><b><font size=2> </font></b></i><font size=2>in immediately available funds a fully-earned, non-refundable amendment fee in an aggregate amount equal to $200,000.</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:justify;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt; text-indent:0.6in;text-align:justify;'><font size=2>Section 4.3  The representations and warranties set forth in </font><u><font size=2>Section 5</font></u><font size=2> of this Amendment shall be true and correct.</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt; text-indent:0.6in;text-align:justify;'><font size=2>Section 4.4  All proceedings taken in connection with the transactions contemplated by this Amendment and all documents, instruments and other legal matters incident thereto shall be reasonably satisfactory to the Administrative Agent and its legal counsel.</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:justify;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt; text-indent:0.32in;text-align:justify;'><font size=2>Section 5.  </font><u><font size=2>Representations and Warranties</font></u><font size=2>.&nbsp;  To induce the Administrative Agent and the Banks party hereto to enter into this Amendment, the Borrower represents and warrants to the Administrative Agent and the Banks that (i) the execution, delivery and performance of this Amendment has been duly authorized by all requisite corporate action on the part of the Borrower and that this Amendment has been duly executed and delivered by the Borrower and this Amendment and the Credit Agreement, as amended hereby, constitutes valid and binding obligations of the Borrower enforceable in accordance with its terms, (ii) no Default or Event of </font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:justify;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:center;'><font size=2>5</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=1>&nbsp;</font></p>
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<p style=' margin-bottom:0pt; margin-top:0pt;text-align:justify;'><font size=2>Default (after giving effect to this Amendment) has occurred and is continuing under the Credit Agreement or would result from the execution and delivery of this Amendment, and (iii) each of the representations and warranties set forth in </font><u><font size=2>Section 5</font></u><font size=2> of the Credit Agreement, as amended hereby, is true and correct in all material respects as of the date hereof, except that if any such representation or warranty relates solely to an earlier date it need only remain true as of such date.</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:justify;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt; text-indent:0.32in;text-align:justify;'><font size=2>Section 6.  </font><u><font size=2>Severability</font></u><font size=2>.   Any provision of this Amendment held by a court of competent jurisdiction to be invalid or unenforceable shall not impair or invalidate the remainder of this Amendment and the effect thereof shall be confined to the provision so held to be invalid or unenforceable. </font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:justify;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt; text-indent:0.32in;text-align:justify;'><font size=2>Section 7.  </font><u><font size=2>References</font></u><font size=2>.  Any reference to the Credit Agreement contained in any document, instrument or agreement executed in connection with the Credit Agreement shall be deemed to be a reference to the Credit Agreement as modified by this Amendment.  </font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:justify;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt; text-indent:0.32in;text-align:justify;'><font size=2>Section 8.  </font><u><font size=2>Counterparts</font></u><font size=2>.  This Amendment may be executed in one or more counterparts, each of which shall constitute an original, but all of which taken together shall be one and the same instrument.  This Amendment may also be executed by facsimile or electronic means and each facsimile or electronic signature hereto shall be deemed for all purposes to be an original signatory page.</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:justify;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt; text-indent:0.32in;text-align:justify;'><font size=2>Section 9.  </font><u><font size=2>Costs</font></u><font size=2>.  The Borrower agrees to pay on demand all reasonable costs and expenses incurred by the Administrative Agent (including fees and expenses of counsel) incurred in connection with the negotiation and preparation of this Amendment.</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:justify;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt; text-indent:0.32in;text-align:justify;'><font size=2>Section  10.&nbsp;&nbsp;&nbsp;</font><u><font size=2>Governing Law</font></u><font size=2>.  The validity and interpretation of this Amendment and the terms and conditions set forth herein, shall be governed by and construed in accordance with the laws of the State of New York, without giving effect to any provisions relating to conflict of laws other than section 5-1401 of the New York General Obligations Laws.</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:justify;'><font size=2>&nbsp;</font></p>


<table border="0" cellspacing=0 cellpadding=0 width="591" style='margin-left:22.85pt;border-collapse:collapse'>
    <tr >
        <td width="84" valign=top >
            <p ><font size=2>Section 11.&nbsp;&nbsp;</font></p> </td>
        <td width="507" valign=top >
            <p ><u><font size=2>Miscellaneous</font></u><font size=2>.  This Amendment shall be deemed to be a Credit Document.</font></p> </td> </tr></table>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:justify;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:center;'><i><font size=2>- Remainder of page left blank; signature pages follow -</font></i></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>


<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:center;'><font size=2>6</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=1>&nbsp;</font></p>
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<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:12pt; margin-top:0pt; text-indent:0.5in;text-align:justify;'><font size=2>In Witness Whereof, the parties hereto have caused this Amendment to be duly executed and delivered in New York, New York by their duly authorized officers as of the day and year first above written.</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:justify;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt; margin-left:3.5in;text-align:left;'><b><font SIZE=2>BLACK HILLS CORPORATION</font></b><font size=2>, a South Dakota corporation</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:justify;'><font size=2>&nbsp;</font></p>


<table border="0" cellspacing=0 cellpadding=0 width="220" style='margin-left:3.5in;border-collapse:collapse'>
    <tr >
        <td width="48" valign=top >
            <p ><font size=2>By:</font></p> </td>
        <td  colspan="2" valign=top >
            <p ><u><font size=2>/s/ Mark T. Thies</font></u></p> </td>
        <td  width="40">
            <p ><font size=1>&nbsp;</font></td> </tr>
    <tr >
        <td width="48" valign=top >
            <p ><font size=2>Name:</font></p> </td>
        <td width="112" valign=top >
            <p ><font size=2>Mark T. Thies</font></p> </td>
        <td   colspan="2">
            <p ><font size=1>&nbsp;</font></td> </tr>
    <tr >
        <td width="48" valign=top >
            <p ><font size=2>Title:</font></p> </td>
        <td  colspan="3" valign=top >
            <p ><font size=2>Executive VP and CFO</font></p> </td> </tr>
    <tr>
        <td width="48" ></td>

        <td width="112" ></td>

        <td width="20" ></td>

        <td width="40" ></td> </tr> </table>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'>
</p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:right;'><font size=2>Second Amendment</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>
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<p style=' margin-bottom:12pt; margin-top:0pt; text-indent:0.5in;text-align:justify;'><font size=2>In Witness Whereof, the parties hereto have caused this Amendment to be duly executed and delivered in New York, New York by their duly authorized officers as of the day and year first above written.</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:justify;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt; margin-left:3.5in;text-align:left;'><b><font SIZE=2>ABN AMRO BANK N.V., </font></b><font size=2>as Administrative Agent</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:justify;'><font size=2>&nbsp;</font></p>


<table border="0" cellspacing=0 cellpadding=0 width="196" style='margin-left:3.5in;border-collapse:collapse'>
    <tr >
        <td width="48" valign=top >
            <p ><font size=2>By:</font></p> </td>
        <td  colspan="2" valign=top >
            <p ><u><font size=2>/s/ Allen R. Broyles</font></u></p> </td> </tr>
    <tr >
        <td width="48" valign=top >
            <p ><font size=2>Name:</font></p> </td>
        <td width="129" valign=top >
            <p ><font size=2>Allen R. Broyles</font></p> </td>
        <td  width="19">
            <p ><font size=1>&nbsp;</font></td> </tr>
    <tr >
        <td width="48" valign=top >
            <p ><font size=2>Title:</font></p> </td>
        <td  colspan="2" valign=top >
            <p ><font size=2>First Vice President</font></p> </td> </tr></table>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>


<table border="0" cellspacing=0 cellpadding=0 width="208" style='margin-left:3.5in;border-collapse:collapse'>
    <tr >
        <td width="48" valign=top >
            <p ><font size=2>By:</font></p> </td>
        <td  colspan="2" valign=top >
            <p ><u><font size=2>/s/ Kris A. Grosshans</font></u></p> </td>
        <td  width="1">
            <p ><font size=1>&nbsp;</font></td> </tr>
    <tr >
        <td width="48" valign=top >
            <p ><font size=2>Name:</font></p> </td>
        <td width="140" valign=top >
            <p ><font size=2>Kris A. Grosshans</font></p> </td>
        <td   colspan="2">
            <p ><font size=1>&nbsp;</font></td> </tr>
    <tr >
        <td width="48" valign=top >
            <p ><font size=2>Title:</font></p> </td>
        <td  colspan="3" valign=top >
            <p ><font size=2>Senior Vice President</font></p> </td> </tr>
    <tr>
        <td width="48" ></td>

        <td width="140" ></td>

        <td width="19" ></td>

        <td width="1" ></td> </tr> </table>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt; margin-left:3.5in;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt; margin-left:3.5in;text-align:left;'><b><font SIZE=2>ABN AMRO BANK N.V.</font></b></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:justify;'><font size=2>&nbsp;</font></p>


<table border="0" cellspacing=0 cellpadding=0 width="208" style='margin-left:3.5in;border-collapse:collapse'>
    <tr >
        <td width="48" valign=top >
            <p ><font size=2>By:</font></p> </td>
        <td  colspan="2" valign=top >
            <p ><u><font size=2>/s/ Kris A. Grosshans</font></u></p> </td>
        <td  width="1">
            <p ><font size=1>&nbsp;</font></td> </tr>
    <tr >
        <td width="48" valign=top >
            <p ><font size=2>Name:</font></p> </td>
        <td width="140" valign=top >
            <p ><font size=2>Kris A. Grosshans</font></p> </td>
        <td   colspan="2">
            <p ><font size=1>&nbsp;</font></td> </tr>
    <tr >
        <td width="48" valign=top >
            <p ><font size=2>Title:</font></p> </td>
        <td  colspan="3" valign=top >
            <p ><font size=2>Senior Vice President</font></p> </td> </tr>
    <tr>
        <td width="48" ></td>

        <td width="140" ></td>

        <td width="19" ></td>

        <td width="1" ></td> </tr> </table>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>


<table border="0" cellspacing=0 cellpadding=0 width="212" style='margin-left:3.5in;border-collapse:collapse'>
    <tr >
        <td width="48" valign=top >
            <p ><font size=2>By:</font></p> </td>
        <td  colspan="3" valign=top >
            <p ><u><font size=2>/s/ Meghan A. Schultz</font></u></p> </td> </tr>
    <tr >
        <td width="48" valign=top >
            <p ><font size=2>Name:</font></p> </td>
        <td  colspan="2" valign=top >
            <p ><font size=2>Meghan A. Schultz</font></p> </td>
        <td  width="20">
            <p ><font size=1>&nbsp;</font></td> </tr>
    <tr >
        <td width="48" valign=top >
            <p ><font size=2>Title:</font></p> </td>
        <td width="115" valign=top >
            <p ><font size=2>Vice President</font></p> </td>
        <td   colspan="2">
            <p ><font size=1>&nbsp;</font></td> </tr>
    <tr>
        <td width="48" ></td>

        <td width="115" ></td>

        <td width="29" ></td>

        <td width="20" ></td> </tr> </table>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt; margin-left:3.5in;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt; margin-left:3.5in;text-align:left;'><b><font size=2>Union Bank of California, N.A.</font></b></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:justify;'><font size=2>&nbsp;</font></p>


<table border="0" cellspacing=0 cellpadding=0 width="179" style='margin-left:3.5in;border-collapse:collapse'>
    <tr >
        <td width="48" valign=top >
            <p ><font size=2>By:</font></p> </td>
        <td  colspan="3" valign=top >
            <p ><u><font size=2>/s/ Robert J. Cole</font></u></p> </td> </tr>
    <tr >
        <td width="48" valign=top >
            <p ><font size=2>Name:</font></p> </td>
        <td width="112" valign=top >
            <p ><font size=2>Robert J. Cole</font></p> </td>
        <td   colspan="2">
            <p ><font size=1>&nbsp;</font></td> </tr>
    <tr >
        <td width="48" valign=top >
            <p ><font size=2>Title:</font></p> </td>
        <td  colspan="2" valign=top >
            <p ><font size=2>Vice President</font></p> </td>
        <td  width="16">
            <p ><font size=1>&nbsp;</font></td> </tr>
    <tr>
        <td width="48" ></td>

        <td width="112" ></td>

        <td width="3" ></td>

        <td width="16" ></td> </tr> </table>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt; margin-left:3.5in;text-align:left;'><b><font size=2>U.S. Bank National Association</font></b></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:justify;'><font size=2>&nbsp;</font></p>


<table border="0" cellspacing=0 cellpadding=0 width="204" style='margin-left:3.5in;border-collapse:collapse'>
    <tr >
        <td width="48" valign=top >
            <p ><font size=2>By:</font></p> </td>
        <td  colspan="3" valign=top >
            <p ><u><font size=2>/s/ Christine G. Dean</font></u></p> </td> </tr>
    <tr >
        <td width="48" valign=top >
            <p ><font size=2>Name:</font></p> </td>
        <td  colspan="2" valign=top >
            <p ><font size=2>Christine G. Dean</font></p> </td>
        <td  width="19">
            <p ><font size=1>&nbsp;</font></td> </tr>
    <tr >
        <td width="48" valign=top >
            <p ><font size=2>Title:</font></p> </td>
        <td width="115" valign=top >
            <p ><font size=2>Vice President</font></p> </td>
        <td   colspan="2">
            <p ><font size=1>&nbsp;</font></td> </tr>
    <tr>
        <td width="48" ></td>

        <td width="115" ></td>

        <td width="23" ></td>

        <td width="19" ></td> </tr> </table>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'>
</p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:right;'><font size=2>Second Amendment</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>
<br>
<HR noshade align="center" width="100%" size="2">
<p style='page-break-before:always'></p>
<pAGE>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt; margin-left:3.5in; text-indent:-3.33in;text-align:justify;'><b><font SIZE=2>SIGNATURES CONTINUED</font></b></p>

<p style=' margin-bottom:0pt; margin-top:0pt; margin-left:3.5in; text-indent:-3.33in;text-align:justify;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt; margin-left:3.5in;text-align:left;'><b><font size=2>Bank of America</font></b></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:justify;'><font size=2>&nbsp;</font></p>


<table border="0" cellspacing=0 cellpadding=0 width="208" style='margin-left:3.5in;border-collapse:collapse'>
    <tr >
        <td width="48" valign=top >
            <p ><font size=2>By:</font></p> </td>
        <td  colspan="2" valign=top >
            <p ><u><font size=2>/s/ Gabriela Millhorn</font></u></p> </td>
        <td  width="5">
            <p ><font size=1>&nbsp;</font></td> </tr>
    <tr >
        <td width="48" valign=top >
            <p ><font size=2>Name:</font></p> </td>
        <td width="136" valign=top >
            <p ><font size=2>Gabriela Millhorn</font></p> </td>
        <td   colspan="2">
            <p ><font size=1>&nbsp;</font></td> </tr>
    <tr >
        <td width="48" valign=top >
            <p ><font size=2>Title:</font></p> </td>
        <td  colspan="3" valign=top >
            <p ><font size=2>Senior Vice President</font></p> </td> </tr>
    <tr>
        <td width="48" ></td>

        <td width="136" ></td>

        <td width="19" ></td>

        <td width="5" ></td> </tr> </table>

<p style=' margin-bottom:0pt; margin-top:0pt; margin-left:3.5in;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt; margin-left:3.5in;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt; margin-left:3.5in;text-align:left;'><b><font SIZE=2>BMO CAPITAL MARKETS FINANCING, INC.</font></b></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:justify;'><font size=2>&nbsp;</font></p>


<table border="0" cellspacing=0 cellpadding=0 width="188" style='margin-left:3.5in;border-collapse:collapse'>
    <tr >
        <td width="48" valign=top >
            <p ><font size=2>By:</font></p> </td>
        <td  colspan="3" valign=top >
            <p ><u><font size=2>/s/ Cahal Carmody</font></u></p> </td> </tr>
    <tr >
        <td width="48" valign=top >
            <p ><font size=2>Name:</font></p> </td>
        <td  colspan="2" valign=top >
            <p ><font size=2>Cahal Carmody</font></p> </td>
        <td  width="19">
            <p ><font size=1>&nbsp;</font></td> </tr>
    <tr >
        <td width="48" valign=top >
            <p ><font size=2>Title:</font></p> </td>
        <td width="115" valign=top >
            <p ><font size=2>Vice President</font></p> </td>
        <td   colspan="2">
            <p ><font size=1>&nbsp;</font></td> </tr>
    <tr>
        <td width="48" ></td>

        <td width="115" ></td>

        <td width="7" ></td>

        <td width="19" ></td> </tr> </table>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt; margin-left:3.5in;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt; margin-left:3.5in;text-align:left;'><b><font size=2>CoBank, ACB</font></b></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:justify;'><font size=2>&nbsp;</font></p>


<table border="0" cellspacing=0 cellpadding=0 width="213" style='margin-left:3.5in;border-collapse:collapse'>
    <tr >
        <td width="48" valign=top >
            <p ><font size=2>By:</font></p> </td>
        <td  colspan="3" valign=top >
            <p ><u><font size=2>/s/ Brett A. Challenger</font></u></p> </td> </tr>
    <tr >
        <td width="48" valign=top >
            <p ><font size=2>Name:</font></p> </td>
        <td  colspan="2" valign=top >
            <p ><font size=2>Brett A. Challenger</font></p> </td>
        <td  width="20">
            <p ><font size=1>&nbsp;</font></td> </tr>
    <tr >
        <td width="48" valign=top >
            <p ><font size=2>Title:</font></p> </td>
        <td width="115" valign=top >
            <p ><font size=2>Vice President</font></p> </td>
        <td   colspan="2">
            <p ><font size=1>&nbsp;</font></td> </tr>
    <tr>
        <td width="48" ></td>

        <td width="115" ></td>

        <td width="31" ></td>

        <td width="20" ></td> </tr> </table>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt; margin-left:3.5in;text-align:left;'><b><font size=2>Farm Credit Bank of Texas</font></b></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:justify;'><font size=2>&nbsp;</font></p>


<table border="0" cellspacing=0 cellpadding=0 width="203" style='margin-left:3.5in;border-collapse:collapse'>
    <tr >
        <td width="48" valign=top >
            <p ><font size=2>By:</font></p> </td>
        <td  colspan="3" valign=top >
            <p ><u><font size=2>/s/ Horace R. Harrod</font></u></p> </td> </tr>
    <tr >
        <td width="48" valign=top >
            <p ><font size=2>Name:</font></p> </td>
        <td  colspan="2" valign=top >
            <p ><font size=2>Horace R. Harrod</font></p> </td>
        <td  width="19">
            <p ><font size=1>&nbsp;</font></td> </tr>
    <tr >
        <td width="48" valign=top >
            <p ><font size=2>Title:</font></p> </td>
        <td width="115" valign=top >
            <p ><font size=2>Vice President</font></p> </td>
        <td   colspan="2">
            <p ><font size=1>&nbsp;</font></td> </tr>
    <tr>
        <td width="48" ></td>

        <td width="115" ></td>

        <td width="21" ></td>

        <td width="19" ></td> </tr> </table>

<p style=' margin-bottom:0pt; margin-top:0pt; margin-left:3.5in;text-align:justify;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt; margin-left:3.5in;text-align:justify;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt; margin-left:3.5in;text-align:left;'><b><font size=2>AgFirst Farm Credit Bank</font></b></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:justify;'><font size=2>&nbsp;</font></p>


<table border="0" cellspacing=0 cellpadding=0 width="179" style='margin-left:3.5in;border-collapse:collapse'>
    <tr >
        <td width="48" valign=top >
            <p ><font size=2>By:</font></p> </td>
        <td  colspan="3" valign=top >
            <p ><u><font size=2>/s/ John Burnside</font></u></p> </td> </tr>
    <tr >
        <td width="48" valign=top >
            <p ><font size=2>Name:</font></p> </td>
        <td width="112" valign=top >
            <p ><font size=2>John Burnside</font></p> </td>
        <td   colspan="2">
            <p ><font size=1>&nbsp;</font></td> </tr>
    <tr >
        <td width="48" valign=top >
            <p ><font size=2>Title:</font></p> </td>
        <td  colspan="2" valign=top >
            <p ><font size=2>Vice President</font></p> </td>
        <td  width="16">
            <p ><font size=1>&nbsp;</font></td> </tr>
    <tr>
        <td width="48" ></td>

        <td width="112" ></td>

        <td width="3" ></td>

        <td width="16" ></td> </tr> </table>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt; margin-left:3.5in;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt; margin-left:3.5in;text-align:left;'><b><font SIZE=2>THE BANK OF NOVA SCOTIA</font></b></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:justify;'><font size=2>&nbsp;</font></p>


<table border="0" cellspacing=0 cellpadding=0 width="191" style='margin-left:3.5in;border-collapse:collapse'>
    <tr >
        <td width="48" valign=top >
            <p ><font size=2>By:</font></p> </td>
        <td  colspan="2" valign=top >
            <p ><u><font size=2>/s/ Thane Rattew</font></u></p> </td>
        <td  width="12">
            <p ><font size=1>&nbsp;</font></td> </tr>
    <tr >
        <td width="48" valign=top >
            <p ><font size=2>Name:</font></p> </td>
        <td width="111" valign=top >
            <p ><font size=2>Thane Rattew</font></p> </td>
        <td   colspan="2">
            <p ><font size=1>&nbsp;</font></td> </tr>
    <tr >
        <td width="48" valign=top >
            <p ><font size=2>Title:</font></p> </td>
        <td  colspan="3" valign=top >
            <p ><font size=2>Managing Director</font></p> </td> </tr>
    <tr>
        <td width="48" ></td>

        <td width="111" ></td>

        <td width="20" ></td>

        <td width="12" ></td> </tr> </table>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'>
</p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:right;'><font size=2>Second Amendment</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>
<br>
<HR noshade align="center" width="100%" size="2">
<p style='page-break-before:always'></p>
<pAGE>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt; margin-left:3.5in; text-indent:-3.33in;text-align:justify;'><b><font SIZE=2>SIGNATURES CONTINUED</font></b></p>

<p style=' margin-bottom:0pt; margin-top:0pt; margin-left:3.5in; text-indent:-3.33in;text-align:justify;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt; margin-left:3.5in;text-align:left;'><b><font SIZE=2>SCOTIABANC INC</font></b></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:justify;'><font size=2>&nbsp;</font></p>


<table border="0" cellspacing=0 cellpadding=0 width="196" style='margin-left:3.5in;border-collapse:collapse'>
    <tr >
        <td width="48" valign=top >
            <p ><font size=2>By:</font></p> </td>
        <td  colspan="3" valign=top >
            <p ><u><font size=2>/s/ Patrick J. Hawes</font></u></p> </td> </tr>
    <tr >
        <td width="48" valign=top >
            <p ><font size=2>Name:</font></p> </td>
        <td  colspan="2" valign=top >
            <p ><font size=2>Patrick J. Hawes</font></p> </td>
        <td  width="20">
            <p ><font size=1>&nbsp;</font></td> </tr>
    <tr >
        <td width="48" valign=top >
            <p ><font size=2>Title:</font></p> </td>
        <td width="99" valign=top >
            <p ><font size=2>Comptroller</font></p> </td>
        <td   colspan="2">
            <p ><font size=1>&nbsp;</font></td> </tr>
    <tr>
        <td width="48" ></td>

        <td width="99" ></td>

        <td width="29" ></td>

        <td width="20" ></td> </tr> </table>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt; margin-left:3.5in;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt; margin-left:3.5in;text-align:left;'><b><font size=2>Wells Fargo Bank, N.A.</font></b></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:justify;'><font size=2>&nbsp;</font></p>


<table border="0" cellspacing=0 cellpadding=0 width="169" style='margin-left:3.5in;border-collapse:collapse'>
    <tr >
        <td width="48" valign=top >
            <p ><font size=2>By:</font></p> </td>
        <td  colspan="3" valign=top >
            <p ><u><font size=2>/s/ Richard Gan</font></u></p> </td> </tr>
    <tr >
        <td width="48" valign=top >
            <p ><font size=2>Name:</font></p> </td>
        <td width="101" valign=top >
            <p ><font size=2>Richard Gan</font></p> </td>
        <td   colspan="2">
            <p ><font size=1>&nbsp;</font></td> </tr>
    <tr >
        <td width="48" valign=top >
            <p ><font size=2>Title:</font></p> </td>
        <td  colspan="2" valign=top >
            <p ><font size=2>Vice President</font></p> </td>
        <td  width="7">
            <p ><font size=1>&nbsp;</font></td> </tr>
    <tr>
        <td width="48" ></td>

        <td width="101" ></td>

        <td width="13" ></td>

        <td width="7" ></td> </tr> </table>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt; margin-left:3.5in;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt; margin-left:3.5in;text-align:left;'><b><font SIZE=2>BAYERISCHE LANDESBANK</font></b></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:justify;'><font size=2>&nbsp;</font></p>


<table border="0" cellspacing=0 cellpadding=0 width="176" style='margin-left:3.5in;border-collapse:collapse'>
    <tr >
        <td width="48" valign=top >
            <p ><font size=2>By:</font></p> </td>
        <td  colspan="3" valign=top >
            <p ><u><font size=2>/s/ John Gregory</font></u></p> </td> </tr>
    <tr >
        <td width="48" valign=top >
            <p ><font size=2>Name:</font></p> </td>
        <td width="109" valign=top >
            <p ><font size=2>John Gregory</font></p> </td>
        <td   colspan="2">
            <p ><font size=1>&nbsp;</font></td> </tr>
    <tr >
        <td width="48" valign=top >
            <p ><font size=2>Title:</font></p> </td>
        <td  colspan="2" valign=top >
            <p ><font size=2>Vice President</font></p> </td>
        <td  width="13">
            <p ><font size=1>&nbsp;</font></td> </tr>
    <tr>
        <td width="48" ></td>

        <td width="109" ></td>

        <td width="5" ></td>

        <td width="13" ></td> </tr> </table>

<p style=' margin-bottom:0pt; margin-top:0pt; margin-left:3.5in;text-align:justify;'><font size=2>&nbsp;</font></p>


<table border="0" cellspacing=0 cellpadding=0 width="205" style='margin-left:3.5in;border-collapse:collapse'>
    <tr >
        <td width="48" valign=top >
            <p ><font size=2>By:</font></p> </td>
        <td  colspan="3" valign=top >
            <p ><u><font size=2>/s/ George J. Schnept</font></u></p> </td> </tr>
    <tr >
        <td width="48" valign=top >
            <p ><font size=2>Name:</font></p> </td>
        <td  colspan="2" valign=top >
            <p ><font size=2>George J. Schnept</font></p> </td>
        <td  width="19">
            <p ><font size=1>&nbsp;</font></td> </tr>
    <tr >
        <td width="48" valign=top >
            <p ><font size=2>Title:</font></p> </td>
        <td width="115" valign=top >
            <p ><font size=2>Vice President</font></p> </td>
        <td   colspan="2">
            <p ><font size=1>&nbsp;</font></td> </tr>
    <tr>
        <td width="48" ></td>

        <td width="115" ></td>

        <td width="24" ></td>

        <td width="19" ></td> </tr> </table>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt; margin-left:3.5in;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt; margin-left:3.5in;text-align:left;'><b><font size=2>Societe Generale</font></b></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:justify;'><font size=2>&nbsp;</font></p>


<table border="0" cellspacing=0 cellpadding=0 width="163" style='margin-left:3.5in;border-collapse:collapse'>
    <tr >
        <td width="48" valign=top >
            <p ><font size=2>By:</font></p> </td>
        <td  colspan="2" valign=top >
            <p ><u><font size=2>/s/ Effie Han</font></u></p> </td>
        <td  width="13">
            <p ><font size=1>&nbsp;</font></td> </tr>
    <tr >
        <td width="48" valign=top >
            <p ><font size=2>Name:</font></p> </td>
        <td width="83" valign=top >
            <p ><font size=2>Effie Han</font></p> </td>
        <td   colspan="2">
            <p ><font size=1>&nbsp;</font></td> </tr>
    <tr >
        <td width="48" valign=top >
            <p ><font size=2>Title:</font></p> </td>
        <td  colspan="3" valign=top >
            <p ><font size=2>Vice President</font></p> </td> </tr>
    <tr>
        <td width="48" ></td>

        <td width="83" ></td>

        <td width="19" ></td>

        <td width="13" ></td> </tr> </table>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt; margin-left:3.5in;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt; margin-left:3.5in;text-align:left;'><b><font size=2>Fifth Third Bank</font></b></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:justify;'><font size=2>&nbsp;</font></p>


<table border="0" cellspacing=0 cellpadding=0 width="211" style='margin-left:3.5in;border-collapse:collapse'>
    <tr >
        <td width="48" valign=top >
            <p ><font size=2>By:</font></p> </td>
        <td  colspan="2" valign=top >
            <p ><u><font size=2>/s/ Ashley Radel</font></u></p> </td>
        <td  width="37">
            <p ><font size=1>&nbsp;</font></td> </tr>
    <tr >
        <td width="48" valign=top >
            <p ><font size=2>Name:</font></p> </td>
        <td width="105" valign=top >
            <p ><font size=2>Ashley Radel</font></p> </td>
        <td   colspan="2">
            <p ><font size=1>&nbsp;</font></td> </tr>
    <tr >
        <td width="48" valign=top >
            <p ><font size=2>Title:</font></p> </td>
        <td  colspan="3" valign=top >
            <p ><font size=2>Relationship Manager</font></p> </td> </tr>
    <tr>
        <td width="48" ></td>

        <td width="105" ></td>

        <td width="20" ></td>

        <td width="37" ></td> </tr> </table>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>


<table border="0" cellspacing=0 cellpadding=0 width="219" style='margin-left:3.5in;border-collapse:collapse'>
    <tr >
        <td width="48" valign=top >
            <p ><font size=2>By:</font></p> </td>
        <td  colspan="3" valign=top >
            <p ><u><font size=2>/s/ Michael Mendenhall</font></u></p> </td> </tr>
    <tr >
        <td width="48" valign=top >
            <p ><font size=2>Name:</font></p> </td>
        <td  colspan="2" valign=top >
            <p ><font size=2>Michael Mendenhall</font></p> </td>
        <td  width="20">
            <p ><font size=1>&nbsp;</font></td> </tr>
    <tr >
        <td width="48" valign=top >
            <p ><font size=2>Title:</font></p> </td>
        <td width="115" valign=top >
            <p ><font size=2>Vice President</font></p> </td>
        <td   colspan="2">
            <p ><font size=1>&nbsp;</font></td> </tr>
    <tr>
        <td width="48" ></td>

        <td width="115" ></td>

        <td width="36" ></td>

        <td width="20" ></td> </tr> </table>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'>
</p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:right;'><font size=2>Second Amendment</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>
<br>
<HR noshade align="center" width="100%" size="2">
<p style='page-break-before:always'></p>
<pAGE>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt; margin-left:3.5in; text-indent:-3.33in;text-align:justify;'><b><font SIZE=2>SIGNATURES CONTINUED</font></b></p>

<p style=' margin-bottom:0pt; margin-top:0pt; margin-left:3.5in; text-indent:-3.33in;text-align:justify;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt; margin-left:3.5in;text-align:left;'><b><font SIZE=2>MIZUHO CORPORATE BANK LTD</font></b></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:justify;'><font size=2>&nbsp;</font></p>


<table border="0" cellspacing=0 cellpadding=0 width="232" style='margin-left:3.5in;border-collapse:collapse'>
    <tr >
        <td width="48" valign=top >
            <p ><font size=2>By:</font></p> </td>
        <td  colspan="2" valign=top >
            <p ><u><font size=2>/s/ Raymond Ventura</font></u></p> </td>
        <td  width="25">
            <p ><font size=1>&nbsp;</font></td> </tr>
    <tr >
        <td width="48" valign=top >
            <p ><font size=2>Name:</font></p> </td>
        <td width="139" valign=top >
            <p ><font size=2>Raymond Ventura</font></p> </td>
        <td   colspan="2">
            <p ><font size=1>&nbsp;</font></td> </tr>
    <tr >
        <td width="48" valign=top >
            <p ><font size=2>Title:</font></p> </td>
        <td  colspan="3" valign=top >
            <p ><font size=2>Deputy General Manager</font></p> </td> </tr>
    <tr>
        <td width="48" ></td>

        <td width="139" ></td>

        <td width="20" ></td>

        <td width="25" ></td> </tr> </table>

<p style=' margin-bottom:0pt; margin-top:0pt; margin-left:3.5in;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt; margin-left:3.5in;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt; margin-left:3.5in;text-align:left;'><b><font SIZE=2>ROYAL BANK OF CANADA</font></b></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:justify;'><font size=2>&nbsp;</font></p>


<table border="0" cellspacing=0 cellpadding=0 width="225" style='margin-left:3.5in;border-collapse:collapse'>
    <tr >
        <td width="48" valign=top >
            <p ><font size=2>By:</font></p> </td>
        <td  colspan="3" valign=top >
            <p ><u><font size=2>/s/ David A. McCluskey</font></u></p> </td> </tr>
    <tr >
        <td width="48" valign=top >
            <p ><font size=2>Name:</font></p> </td>
        <td width="159" valign=top >
            <p ><font size=2>David A. McCluskey</font></p> </td>
        <td   colspan="2">
            <p ><font size=1>&nbsp;</font></td> </tr>
    <tr >
        <td width="48" valign=top >
            <p ><font size=2>Title:</font></p> </td>
        <td  colspan="2" valign=top >
            <p ><font size=2>Authorized Signatory</font></p> </td>
        <td  width="17">
            <p ><font size=1>&nbsp;</font></td> </tr>
    <tr>
        <td width="48" ></td>

        <td width="159" ></td>

        <td width="1" ></td>

        <td width="17" ></td> </tr> </table>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:right;'><font size=2>Second Amendment</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>


<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>


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