<SEC-DOCUMENT>0000067716-14-000110.txt : 20140826
<SEC-HEADER>0000067716-14-000110.hdr.sgml : 20140826
<ACCEPTANCE-DATETIME>20140826123501
ACCESSION NUMBER:		0000067716-14-000110
CONFORMED SUBMISSION TYPE:	S-8
PUBLIC DOCUMENT COUNT:		7
FILED AS OF DATE:		20140826
DATE AS OF CHANGE:		20140826
EFFECTIVENESS DATE:		20140826

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			MDU RESOURCES GROUP INC
		CENTRAL INDEX KEY:			0000067716
		STANDARD INDUSTRIAL CLASSIFICATION:	MINING, QUARRYING OF NONMETALLIC MINERALS (NO FUELS) [1400]
		IRS NUMBER:				410423660
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		S-8
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	333-198364
		FILM NUMBER:		141064562

	BUSINESS ADDRESS:	
		STREET 1:		1200 WEST CENTURY AVENUE
		CITY:			BISMARCK
		STATE:			ND
		ZIP:			58503
		BUSINESS PHONE:		701-530-1059

	MAIL ADDRESS:	
		STREET 1:		1200 WEST CENTURY AVENUE
		CITY:			BISMARCK
		STATE:			ND
		ZIP:			58503

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	MONTANA DAKOTA UTILITIES CO
		DATE OF NAME CHANGE:	19850429
</SEC-HEADER>
<DOCUMENT>
<TYPE>S-8
<SEQUENCE>1
<FILENAME>s-8registrationstatement.htm
<DESCRIPTION>S-8
<TEXT>
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		<title>Wdesk | S-8 Registration Statement</title>
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<a name="s5258E204BA93F8BB38B5EF8C6B9A3521"></a><div></div><br><div style="line-height:120%;text-align:center;font-size:12pt;"><div style="padding-left:0px;text-indent:0px;line-height:normal;padding-top:10px;"><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman;font-size:10pt;margin-left:auto;margin-right:auto;width:99.81481481481481%;border-collapse:collapse;text-align:left;"><tr><td colspan="2"></td></tr><tr><td width="86.08534322820037%"></td><td width="13.91465677179963%"></td></tr><tr><td colspan="2" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;font-weight:bold;">&#160;&#160;As filed with the Securities and Exchange Commission on August 26, 2014</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:right;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;font-weight:bold;">Registration No. 333&#8209;</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td></tr><tr><td style="vertical-align:bottom;border-bottom:3px double #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;height:6px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;height:6px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td></tr></table></div></div><div style="line-height:120%;padding-top:8px;text-align:center;font-size:16pt;"><font style="font-family:inherit;font-size:16pt;font-weight:bold;">UNITED STATES</font></div><div style="line-height:120%;text-align:center;font-size:16pt;"><font style="font-family:inherit;font-size:16pt;font-weight:bold;">SECURITIES AND EXCHANGE COMMISSION</font></div><div style="line-height:120%;text-align:center;font-size:16pt;"><font style="font-family:inherit;font-size:16pt;font-weight:bold;">WASHINGTON, D.C. 20549</font></div><div style="line-height:120%;text-align:center;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;font-weight:bold;">__________________</font></div><div style="line-height:120%;padding-top:8px;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;font-weight:bold;">FORM S-8</font></div><div style="line-height:120%;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;font-weight:bold;">REGISTRATION STATEMENT</font></div><div style="line-height:120%;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;font-weight:bold;">UNDER</font></div><div style="line-height:120%;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;font-weight:bold;">THE SECURITIES ACT OF 1933</font></div><div style="line-height:120%;text-align:center;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;font-weight:bold;">__________________</font></div><div style="line-height:120%;padding-top:8px;text-align:center;font-size:14pt;"><font style="font-family:inherit;font-size:14pt;font-weight:bold;">MDU RESOURCES GROUP, INC.</font></div><div style="line-height:120%;text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">(Exact name of registrant as specified in its charter)</font></div><div style="line-height:120%;text-align:center;font-size:12pt;"><div style="padding-left:0px;text-indent:0px;line-height:normal;padding-top:10px;"><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman;font-size:10pt;margin-left:auto;margin-right:auto;width:72.4074074074074%;border-collapse:collapse;text-align:left;"><tr><td colspan="3"></td></tr><tr><td width="35.54987212276215%"></td><td width="32.22506393861892%"></td><td width="32.22506393861892%"></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="padding-top:4px;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;font-weight:bold;">Delaware</font></div><div style="text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">(</font><font style="font-family:inherit;font-size:9pt;">State or other jurisdiction of</font></div><div style="text-align:center;font-size:9pt;"><font style="font-family:inherit;font-size:9pt;">incorporation or organization)</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="padding-top:2px;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;font-weight:bold;">No. 41-0423660</font></div><div style="text-align:center;font-size:9pt;"><font style="font-family:inherit;font-size:9pt;">(I.R.S. Employer</font></div><div style="text-align:center;font-size:9pt;"><font style="font-family:inherit;font-size:9pt;">Identification Number)</font></div></td></tr></table></div></div><div style="line-height:120%;padding-top:8px;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;font-weight:bold;">1200 West Century Avenue</font></div><div style="line-height:120%;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;font-weight:bold;">P.O. Box 5650</font></div><div style="line-height:120%;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;font-weight:bold;">Bismarck, North Dakota 58506-5650</font></div><div style="line-height:120%;text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">(Address of principal executive offices, including zip code)</font></div><div style="line-height:120%;text-align:center;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;font-weight:bold;">__________________</font></div><div style="line-height:120%;padding-top:4px;text-align:center;font-size:16pt;"><font style="font-family:inherit;font-size:16pt;font-weight:bold;">MDU RESOURCES GROUP, INC.</font></div><div style="line-height:120%;text-align:center;font-size:16pt;"><font style="font-family:inherit;font-size:16pt;font-weight:bold;">401(k) RETIREMENT PLAN</font></div><div style="line-height:120%;text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">(Full title of the plan)</font></div><div style="line-height:120%;text-align:center;font-size:6pt;"><font style="font-family:inherit;font-size:6pt;font-weight:bold;">________________________</font></div><div style="line-height:120%;text-align:center;font-size:9pt;"><div style="padding-left:0px;text-indent:0px;line-height:normal;padding-top:10px;"><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman;font-size:10pt;margin-left:auto;margin-right:auto;width:679px;border-collapse:collapse;text-align:left;"><tr><td colspan="3"></td></tr><tr><td width="216px"></td><td width="232px"></td><td width="230px"></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:9pt;"><font style="font-family:inherit;font-size:9pt;font-weight:bold;">David L. Goodin</font></div><div style="text-align:center;font-size:9pt;"><font style="font-family:inherit;font-size:9pt;">President</font></div><div style="text-align:center;font-size:9pt;"><font style="font-family:inherit;font-size:9pt;">and Chief Executive Officer </font></div><div style="text-align:center;font-size:9pt;"><font style="font-family:inherit;font-size:9pt;">MDU Resources Group, Inc.</font></div><div style="text-align:center;font-size:9pt;"><font style="font-family:inherit;font-size:9pt;">1200 West Century Avenue</font></div><div style="text-align:center;font-size:9pt;"><font style="font-family:inherit;font-size:9pt;">Bismarck, North Dakota 58506-5650</font></div><div style="text-align:center;font-size:9pt;"><font style="font-family:inherit;font-size:9pt;">(701) 530-1000</font></div></td><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:9pt;"><font style="font-family:inherit;font-size:9pt;font-weight:bold;">Doran N. Schwartz</font></div><div style="text-align:center;font-size:9pt;"><font style="font-family:inherit;font-size:9pt;">Vice President and</font></div><div style="text-align:center;font-size:9pt;"><font style="font-family:inherit;font-size:9pt;">Chief Financial Officer</font></div><div style="text-align:center;font-size:9pt;"><font style="font-family:inherit;font-size:9pt;">MDU Resources Group, Inc.</font></div><div style="text-align:center;font-size:9pt;"><font style="font-family:inherit;font-size:9pt;">1200 West Century Avenue</font></div><div style="text-align:center;font-size:9pt;"><font style="font-family:inherit;font-size:9pt;">Bismarck, North Dakota 58506-5650</font></div><div style="text-align:center;font-size:9pt;"><font style="font-family:inherit;font-size:9pt;">(701) 530-1000</font></div><div style="text-align:center;font-size:9pt;"><font style="font-family:inherit;font-size:9pt;"><br></font></div></td><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:9pt;"><font style="font-family:inherit;font-size:9pt;font-weight:bold;">Elizabeth W. Powers</font></div><div style="text-align:center;font-size:9pt;"><font style="font-family:inherit;font-size:9pt;">Duane Morris LLP</font></div><div style="text-align:center;font-size:9pt;"><font style="font-family:inherit;font-size:9pt;">1540 Broadway</font></div><div style="text-align:center;font-size:9pt;"><font style="font-family:inherit;font-size:9pt;">New York, New York 10036</font></div><div style="text-align:center;font-size:9pt;"><font style="font-family:inherit;font-size:9pt;">(212) 692-1000</font></div><div style="text-align:center;font-size:9pt;"><font style="font-family:inherit;font-size:9pt;"><br></font></div></td></tr></table></div></div><div style="line-height:120%;text-align:center;font-size:9pt;"><font style="font-family:inherit;font-size:9pt;">(Name, address and telephone number, including area code, of agent for service)</font></div><div style="line-height:120%;text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">_____________</font></div><div style="line-height:120%;text-align:center;font-size:10pt;"><div style="padding-left:0px;text-indent:0px;line-height:normal;padding-top:10px;"><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman;font-size:10pt;margin-left:auto;margin-right:auto;width:99.81481481481481%;border-collapse:collapse;text-align:left;"><tr><td colspan="7"></td></tr><tr><td width="23.56215213358071%"></td><td width="17.439703153988866%"></td><td width="2.9684601113172544%"></td><td width="9.276437847866418%"></td><td width="20.77922077922078%"></td><td width="3.153988868274583%"></td><td width="22.820037105751393%"></td></tr><tr><td colspan="7" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:9pt;"><font style="font-family:inherit;font-size:9pt;">Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company.  See the definitions of &#8220;large accelerated filer,&#8221; &#8220;accelerated filer&#8221; and &#8220;smaller reporting company&#8221; in Rule 12b-2 of the Exchange Act.  (Check one):</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><div style="font-size:9pt;"><font style="font-family:inherit;font-size:9pt;"><br></font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:9pt;"><font style="font-family:inherit;font-size:9pt;">Large accelerated filer</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:9pt;"><font style="font-family:Wingdings;font-size:9pt;">x</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:9pt;"><font style="font-family:inherit;font-size:9pt;">Accelerated filer</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:9pt;"><font style="font-family:Wingdings;font-size:9pt;">&#168;</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:9pt;"><font style="font-family:inherit;font-size:9pt;">Non-accelerated filer</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:9pt;"><font style="font-family:Wingdings;font-size:9pt;">&#168;</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:9pt;"><font style="font-family:inherit;font-size:9pt;">Smaller reporting company</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:9pt;"><font style="font-family:Wingdings;font-size:9pt;">&#168;</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td></tr></table></div></div><div style="line-height:120%;padding-top:12px;text-align:center;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;font-weight:bold;">CALCULATION OF REGISTRATION FEE</font></div><div style="line-height:120%;padding-left:8px;font-size:10pt;"><div style="padding-left:0px;text-indent:0px;line-height:normal;padding-top:10px;"><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman;font-size:10pt;width:98.88888888888889%;border-collapse:collapse;text-align:left;"><tr><td colspan="5"></td></tr><tr><td width="19.85018726591761%"></td><td width="20.037453183520597%"></td><td width="20.037453183520597%"></td><td width="20.037453183520597%"></td><td width="20.037453183520597%"></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;border-top:1px solid #000000;"><div style="text-align:center;font-size:9pt;"><font style="font-family:inherit;font-size:9pt;">Title of securities<br>to be registered(1)</font></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;border-left:1px solid #000000;border-top:1px solid #000000;"><div style="text-align:center;font-size:9pt;"><font style="font-family:inherit;font-size:9pt;">Amount to be<br>registered(2)</font></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;border-left:1px solid #000000;border-top:1px solid #000000;"><div style="text-align:center;font-size:9pt;"><font style="font-family:inherit;font-size:9pt;">Proposed maximum<br>offering price<br>per share(3)</font></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;border-left:1px solid #000000;border-top:1px solid #000000;"><div style="text-align:center;font-size:9pt;"><font style="font-family:inherit;font-size:9pt;">Proposed maximum<br>aggregate offering<br>price(3)</font></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;border-left:1px solid #000000;border-top:1px solid #000000;"><div style="text-align:center;font-size:9pt;"><font style="font-family:inherit;font-size:9pt;">Amount of<br>registration fee</font></div></td></tr><tr><td style="vertical-align:top;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;border-top:1px solid #000000;"><div style="text-align:center;font-size:9pt;"><font style="font-family:inherit;font-size:9pt;">Common Stock,<br>$1.00 par value</font></div></td><td style="vertical-align:middle;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;border-left:1px solid #000000;border-top:1px solid #000000;"><div style="text-align:center;font-size:9pt;"><font style="font-family:inherit;font-size:9pt;">3,500,000 shares</font></div></td><td style="vertical-align:middle;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;border-left:1px solid #000000;border-top:1px solid #000000;"><div style="text-align:center;font-size:9pt;"><font style="font-family:inherit;font-size:9pt;">$31.13</font></div></td><td style="vertical-align:middle;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;border-left:1px solid #000000;border-top:1px solid #000000;"><div style="text-align:center;font-size:9pt;"><font style="font-family:inherit;font-size:9pt;">$108,955,000</font></div></td><td style="vertical-align:middle;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;border-left:1px solid #000000;border-top:1px solid #000000;"><div style="text-align:center;font-size:9pt;"><font style="font-family:inherit;font-size:9pt;">$14,034</font></div></td></tr><tr><td colspan="5" style="vertical-align:top;border-bottom:3px double #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:9pt;"><font style="font-family:inherit;font-size:9pt;">(1) In addition, pursuant to Rule 416(c) under the Securities Act of 1933, this registration statement also covers an indeterminate amount of interests to be offered or sold pursuant to the employee benefit plan described herein.<br>(2) Pursuant to Rule 416(a) under the Securities Act of 1933, this registration statement also covers any additional securities to be offered or issued in connection with a stock split, stock dividend or similar transaction.<br>(3) Determined on the basis of the average of the high and low sale price of the common stock as reported in the consolidated reporting system on August 20, 2014, solely for the purpose of calculating the registration fee pursuant to Rule 457(h) under the Securities Act of 1933.<br></font></div></td></tr></table></div></div><br><div></div><hr style="page-break-after:always"><a name="sCEB4F86D9E88CA23EC16EF8C6BC955B1"></a><div></div><br><div style="line-height:120%;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;font-weight:bold;">Part II</font></div><div style="line-height:120%;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;font-weight:bold;">INFORMATION REQUIRED IN THE REGISTRATION STATEMENT</font></div><div style="line-height:120%;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;font-weight:bold;">Item 3.  Incorporation of Documents by Reference.</font></div><div style="line-height:120%;text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;text-align:left;text-indent:48px;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">We incorporate by reference in this registration statement the following documents we or the MDU Resources Group, Inc. 401(k) Retirement Plan have filed with the Securities and Exchange Commission pursuant to the Securities Exchange Act of 1934:</font></div><div style="line-height:120%;text-align:left;text-indent:48px;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;text-align:left;text-indent:48px;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">1.  Annual Report on Form 10-K for the year ended December 31, 2013, filed on February&#160;21, 2014 (SEC File No. 1-3480);</font></div><div style="line-height:120%;text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;text-align:left;text-indent:48px;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">2.  Quarterly Reports on Form 10-Q for the quarters ended March 31, 2014, filed on May&#160;7, 2014, and June 30, 2014, filed on August 8, 2014 (SEC File No. 1-3480);</font></div><div style="line-height:120%;text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;text-align:left;text-indent:48px;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">3. The MDU Resources Group, Inc. 401(k) Retirement Plan&#8217;s Annual Report on Form 11&#8209;K for the year ended December 31, 2013, filed on June 18, 2014 (SEC File No. 1-3480);</font></div><div style="line-height:120%;text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;text-align:left;text-indent:48px;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">4.  Current Reports on Form 8-K filed on January 23, 2014, February 13, 2014, February 19, 2014, March 13, 2014, April 14, 2014, April 24, 2014, May 15, 2014, May 19, 2014, July 21, 2014, and August 19, 2014 and Amendment No. 1 to the December 3, 2013 Current Report on Form 8</font><font style="font-family:inherit;font-size:12pt;">&#8209;</font><font style="font-family:inherit;font-size:12pt;">K filed on February 19, 2014 (SEC File No. 1-3480); and</font></div><div style="line-height:120%;text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;text-align:left;text-indent:48px;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">5.  Description of the common stock contained in the Registration Statement on Form 8&#8209;A, filed on September 21, 1994 as amended by Amendment No. 1 thereto, filed on March 23, 2000, Amendment No. 2 thereto, filed on March 10, 2003, Amendment No. 3 thereto, filed on January 21, 2004, Amendment No. 4 thereto, filed on June 27, 2007, Amendment No. 5 thereto, filed on November 19, 2008, Amendment No. 6 thereto, filed on January 5, 2009, Amendment No. 7 thereto, filed on April 30, 2010, and Amendment No. 8 thereto, filed on August 19, 2014, and any further amendment or report filed for the purpose of updating such description (SEC File No. 1</font><font style="font-family:inherit;font-size:12pt;">&#8209;</font><font style="font-family:inherit;font-size:12pt;">3480).</font></div><div style="line-height:120%;text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;text-align:left;text-indent:48px;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">All documents that we or the MDU Resources Group, Inc. 401(k) Retirement Plan subsequently file pursuant to Sections 13(a), 13(c), 14 and 15(d) of the Securities Exchange Act of 1934 other than any information we furnish, rather than file, with the Securities and Exchange Commission pursuant to certain items of Form 8-K, prior to the filing of a post-effective amendment which indicates that all securities offered have been sold or which deregisters all securities then remaining unsold, shall be deemed to be incorporated by reference in the registration statement and to be part hereof from the date of filing of such documents. Any statement contained herein shall be deemed to be modified or superseded for purposes of this registration statement to the extent that a statement contained in any subsequently filed document which is or is deemed to be incorporated by reference herein modifies or supersedes such statement. Any statement contained in a document incorporated or deemed to be incorporated by reference herein shall be deemed to be modified or superseded for purposes of this registration statement to the extent that a statement contained herein or in any other subsequently filed document which also is or is deemed to be incorporated by reference herein modifies or supersedes such statement. Any such statement so modified or superseded shall not be deemed, except as so modified or superseded, to constitute a part of this registration statement.</font></div><br><div><div style="line-height:120%;text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">II-1</font></div></div><hr style="page-break-after:always"><a name="sCEB4F86D9E88CA23EC16EF8C6BC955B1"></a><div></div><br><div style="line-height:120%;text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;font-weight:bold;">Item 5. Interests of Named Experts and Counsel.</font></div><div style="line-height:120%;text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;text-align:left;text-indent:48px;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">The consolidated financial statements and the related financial statement schedules, incorporated in the registration statement by reference from our Annual Report on Form 10-K for the year ended December 31, 2013, and the effectiveness of our internal control over financial reporting, have been audited by Deloitte &amp; Touche LLP, an independent registered public accounting firm, as stated in their reports, which are incorporated herein by reference. Such consolidated financial statements and financial statement schedules have been so incorporated in reliance upon the reports of such firm given upon their authority as experts in accounting and auditing.</font></div><div style="line-height:120%;text-align:left;text-indent:48px;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:115%;text-align:left;text-indent:48px;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">The statements of net assets available for benefits of the MDU Resources Group, Inc.  401(k) Retirement Plan as of December 31, 2013 and 2012, and the related statement of changes in net assets available for benefits for the year ended December 31, 2013, incorporated in the registration statement by reference from the plan&#8217;s Annual Report on Form 11-K for the year ended December 31, 2013 have been audited by Baker Tilly Virchow Krause, LLP, an independent registered public accounting firm, as stated in their report, which is incorporated herein by reference (which report expresses an unqualified opinion on the statements of net assets available for benefits of the plan as of December 31, 2013 and 2012 and the related statement of changes in net assets available for benefits for the year ended December 31, 2013). Such statements of net assets available for benefits of the plan and statement of changes in net assets available for benefits have been so incorporated in reliance upon the report of such firm given upon their authority as experts in accounting and auditing.</font></div><div style="line-height:120%;text-align:left;text-indent:48px;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;text-align:left;text-indent:48px;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">The validity of the common stock has been passed upon for us by Paul K. Sandness, Esq., our General Counsel, and by Duane Morris LLP, New York, New York. As of July 17, 2014, Mr.&#160;Sandness owned approximately 60,455 shares of our common stock.</font></div><div style="line-height:120%;text-align:left;text-indent:48px;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;font-weight:bold;">Item 6. Indemnification of Directors and Officers.</font></div><div style="line-height:120%;text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;text-align:left;text-indent:48px;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">Our bylaws include the following provision:</font></div><div style="line-height:120%;text-align:left;text-indent:48px;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;text-align:left;text-indent:48px;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">7.07  </font><font style="font-family:inherit;font-size:12pt;font-weight:bold;">Indemnification of Officers, Directors, Employees and Agents.</font></div><div style="line-height:120%;text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:115%;text-align:left;padding-left:108px;text-indent:-108px;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;font-weight:bold;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;</font><font style="font-family:inherit;font-size:12pt;">&#160;(a)&#160;&#160;</font><font style="font-family:inherit;font-size:12pt;font-weight:bold;">Indemnification Granted.</font><font style="font-family:inherit;font-size:12pt;">&#32;&#32;The Corporation shall indemnify and hold harmless, to the fullest extent permitted by applicable law as it presently exists&#160;or may hereafter be amended, any director or former director or officer or&#160;former officer of the Corporation (a &#8220;Director or Officer&#8221;) who was or is made or is threatened to be made a party or is otherwise involved in any action, suit or&#160;proceeding, whether civil, criminal, administrative or investigative (a&#160;&#8220;Proceeding&#8221;) by reason of the fact that he or she is or was a director or officer of the Corporation or is or was serving at the request of the Corporation as a director, officer, employee or agent of another corporation or of a partnership, limited liability company, joint venture, trust, non-profit entity or other enterprise, including service with respect to employee benefit plans, against&#160;expenses (including attorneys&#8217; fees), judgments, fines, penalties, excise&#160;taxes&#160;and penalties assessed with respect to employee benefit plans, and&#160;amounts paid in settlement actually and reasonably incurred by such Director or&#160;Officer. The Corporation shall be required to indemnify a Director</font></div><br><div><div style="line-height:120%;text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">II-2</font></div></div><hr style="page-break-after:always"><a name="sCEB4F86D9E88CA23EC16EF8C6BC955B1"></a><div></div><br><div style="line-height:115%;text-align:left;padding-left:108px;text-indent:-108px;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;or&#160;Officer in connection with a Proceeding (or part thereof) initiated by such Director or Officer only if the Proceeding (or part thereof) was authorized by the Board of Directors.</font></div><div style="line-height:120%;text-align:left;padding-left:108px;text-indent:-24px;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;text-align:left;padding-left:108px;text-indent:-108px;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;(b)&#160;&#160;</font><font style="font-family:inherit;font-size:12pt;font-weight:bold;">Consent to Settlement or Nonadjudicated Disposition.</font><font style="font-family:inherit;font-size:12pt;">&#32;&#32;No indemnification pursuant to this Section 7.07 shall be required with respect to any settlement or other nonadjudicated disposition of any threatened or pending Proceeding unless the Corporation has given its prior consent to such settlement or disposition.</font></div><div style="line-height:120%;text-align:left;padding-left:108px;text-indent:-108px;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;text-align:left;padding-left:108px;text-indent:-108px;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;(c)&#160;&#160;</font><font style="font-family:inherit;font-size:12pt;font-weight:bold;">Advancement of Expenses.</font><font style="font-family:inherit;font-size:12pt;">&#32;&#32;The Corporation shall pay the expenses incurred by a Director or Officer in defending any Proceeding in advance of its final disposition, provided, however, that the payment of such expenses shall be made only upon receipt of an undertaking by the Director or Officer to repay all amounts advanced if it shall ultimately be determined that the Director or Officer is not entitled to be indemnified.</font></div><div style="line-height:120%;text-align:left;padding-left:108px;text-indent:-108px;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;text-align:left;padding-left:108px;text-indent:-108px;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;(d)&#160;&#160;</font><font style="font-family:inherit;font-size:12pt;font-weight:bold;">Claims.</font><font style="font-family:inherit;font-size:12pt;">&#32;&#32;If a claim for indemnification (following a final full or partial disposition of a Proceeding with respect to which indemnification is sought) or advancement of expenses (including attorneys&#8217; fees) under this Section 7.07 is not paid in full within sixty (60) days after a written claim therefor has been received by the Corporation, the Director or Officer may file suit to recover the unpaid amount of such claim and, if successful in whole or in part, shall be entitled to be paid the expense of prosecuting such claim, to the fullest extent permitted by applicable law. In any such action, the Corporation shall have the burden of proving that the Director or Officer was not entitled to the requested indemnification or advancement of expenses under this Section 7.07 or applicable law.</font></div><div style="line-height:120%;text-align:left;padding-left:108px;text-indent:-108px;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;text-align:left;padding-left:108px;text-indent:-108px;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;(e)&#160;&#160;</font><font style="font-family:inherit;font-size:12pt;font-weight:bold;">Other Indemnification and Advancement of Expenses.</font><font style="font-family:inherit;font-size:12pt;">&#32;&#32;The Corporation may provide indemnification and advancement of expenses (including attorneys&#8217; fees) to employees and agents to the extent permitted by applicable law.</font></div><div style="line-height:120%;text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;text-align:left;padding-left:108px;text-indent:-108px;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;(f)&#160;&#160;&#160;</font><font style="font-family:inherit;font-size:12pt;font-weight:bold;">Non-exclusivity of Rights.</font><font style="font-family:inherit;font-size:12pt;">&#32;&#32;The rights conferred on any Director or Officer by this Section 7.07 shall not be exclusive of other rights to which such Director or Officer may have or hereafter acquire under any statute, provision of the Certificate of Incorporation, these Bylaws, agreement, vote of stockholders or disinterested directors or otherwise. Nothing in this Section 7.07 shall limit the power of the Corporation or the Board of Directors to grant indemnification and advancement of expenses, including attorneys&#8217; fees, to directors, officers, employees and agents otherwise than pursuant to this Section 7.07.</font></div><div style="line-height:120%;text-align:left;padding-left:108px;text-indent:-108px;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;text-align:left;padding-left:108px;text-indent:-108px;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;(g)&#160;&#160;</font><font style="font-family:inherit;font-size:12pt;font-weight:bold;">Other Source Indemnification.</font><font style="font-family:inherit;font-size:12pt;">&#32;&#32;The Corporation&#8217;s obligation to indemnify any Director or Officer who was or is serving at its request as a director, officer, employee or agent of another corporation or of a partnership, limited liability company, joint venture, trust, non-profit entity or other enterprise shall be reduced by any amount such Director or Officer may collect as indemnification from such other corporation, partnership, limited liability company, joint venture, trust, non-profit entity or other enterprise.</font></div><br><div><div style="line-height:120%;text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">II-3</font></div></div><hr style="page-break-after:always"><a name="sCEB4F86D9E88CA23EC16EF8C6BC955B1"></a><div></div><br><div style="line-height:120%;text-align:left;padding-left:108px;text-indent:-108px;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;text-align:left;padding-left:108px;text-indent:-108px;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;(h)&#160;&#160;</font><font style="font-family:inherit;font-size:12pt;font-weight:bold;">Repeal or Modification; Legal Representatives.</font><font style="font-family:inherit;font-size:12pt;">&#32;&#32;Any repeal or modification of the foregoing provisions of this Section 7.07 shall not adversely affect any right or protection hereunder of any Director or Officer in respect of any act or omission occurring prior to the time of such repeal or modification. The rights provided to any Director or Officer by this Section 7.07 shall inure to the benefit of such Director&#8217;s or Officer&#8217;s legal representative.</font></div><div style="line-height:120%;text-align:left;padding-left:108px;text-indent:-108px;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;text-align:left;text-indent:48px;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">Section 145 of the General Corporation Law of the State of Delaware provides for indemnification of our directors and officers in a variety of circumstances, which may include liabilities under the Securities Act of 1933. We maintain liability insurance protecting us, as well as our directors and certain officers, against liability by reason of their being or having been our directors or officers. In addition, we have entered into indemnification agreements with our directors and officers to provide for indemnification to the fullest extent permitted by applicable Delaware law and in excess of that expressly permitted by statute, but not to the extent prohibited by law.</font></div><div style="line-height:120%;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><div style="line-height:120%;text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;font-weight:bold;">Item 8.  Exhibits.</font></div><div style="line-height:120%;text-align:center;font-size:12pt;"><div style="padding-left:0px;text-indent:0px;line-height:normal;padding-top:10px;"><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman;font-size:10pt;margin-left:auto;margin-right:auto;width:100%;border-collapse:collapse;text-align:left;"><tr><td colspan="3"></td></tr><tr><td width="10.26694045174537%"></td><td width="25.256673511293638%"></td><td width="64.47638603696099%"></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">*4.1</font></div></td><td colspan="2" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">Restated Certificate of Incorporation of the Company, as amended, filed as Exhibit 3(a) to Form 10-Q for the quarter ended September 30, 2010, filed on November 3, 2010, in File No. 1-3480.</font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div></td><td colspan="2" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">*4.2</font></div></td><td colspan="2" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">Company Bylaws, as amended and restated August 14, 2014, filed as Exhibit 3.1 to Form 8-K dated August 14, 2014, filed on August 19, 2014, in File No. 1-3480.</font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div></td><td colspan="2" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">*4.3</font></div></td><td colspan="2" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">Indenture, dated as of December 15, 2003, between the Company and The Bank of New York, as trustee, filed as Exhibit 4(f) to Form S-8, on January 21, 2004, in Registration No. 333-112035.</font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div></td><td colspan="2" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">*4.4</font></div></td><td colspan="2" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">First Supplemental Indenture, dated as of November 17, 2009, between the Company and The Bank of New York Mellon, as trustee, filed as Exhibit 4(c) to Form 10-K for the year ended December 31, 2009, filed on February 17, 2010, in File No. 1-3480.</font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div></td><td colspan="2" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">*4.5</font></div></td><td colspan="2" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">MDU Resources Group, Inc. 401(k) Retirement Plan, as restated March 1, 2011, filed as Exhibit 10(a) to Form 10-Q for the quarter ended September 30, 2011, filed on November 4, 2011, in File No. 1-3480.</font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div></td><td colspan="2" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">*4.6</font></div></td><td colspan="2" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">Instrument of Amendment to the MDU Resources Group, Inc. 401(k) Retirement Plan, dated March 29, 2011, filed as Exhibit 10(b) to Form 10-Q for the quarter ended March 31, 2011, filed on May 5, 2011, in File No. 1-3480.</font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div></td><td colspan="2" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">*4.7</font></div></td><td colspan="2" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">Instrument of Amendment to the MDU Resources Group, Inc. 401(k) Retirement Plan, dated June 30, 2011, filed as Exhibit 10(d) to Form 10-Q for the quarter ended June 30, 2011, filed on August 5, 2011, in File No. 1-3480.</font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div></td><td colspan="2" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">*4.8</font></div></td><td colspan="2" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">Instrument of Amendment to the MDU Resources Group, Inc. 401(k) Retirement Plan, dated September 9, 2011, filed as Exhibit 10(b) to Form 10-Q for the quarter ended September 30, 2011, filed on November 4, 2011, in File No. 1-3480.</font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div></td><td colspan="2" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">*4.9</font></div></td><td colspan="2" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">Instrument of Amendment to the MDU Resources Group, Inc. 401(k) Retirement Plan, dated December 29, 2011, filed as Exhibit 10(ac) to Form 10-K for the year ended December 31, 2011, filed on February 24, 2012, in File No. 1-3480.</font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div></td><td colspan="2" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">*4.10</font></div></td><td colspan="2" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">Instrument of Amendment to the MDU Resources Group, Inc. 401(k) Retirement Plan, dated May 24, 2012, filed as Exhibit 10(b) to Form 10-Q for the quarter ended June 30, 2012, filed on August 7, 2012, in File No. 1-3480.</font></div></td></tr></table></div></div><br><div><div style="line-height:120%;text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">II-4</font></div></div><hr style="page-break-after:always"><a name="sCEB4F86D9E88CA23EC16EF8C6BC955B1"></a><div></div><br><div style="line-height:120%;text-align:center;font-size:12pt;"><div style="padding-left:0px;text-indent:0px;line-height:normal;padding-top:10px;"><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman;font-size:10pt;margin-left:auto;margin-right:auto;width:100%;border-collapse:collapse;text-align:left;"><tr><td colspan="3"></td></tr><tr><td width="10.26694045174537%"></td><td width="25.256673511293638%"></td><td width="64.47638603696099%"></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;height:8px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td colspan="2" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;height:8px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">*4.11</font></div></td><td colspan="2" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">Instrument of Amendment to the MDU Resources Group, Inc. 401(k) Retirement Plan, dated August 29, 2012, filed as Exhibit 10(a) to Form 10-Q for the quarter ended September 30, 2012, filed on November 7, 2012, in File No. 1-3480.</font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div></td><td colspan="2" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">*4.12</font></div></td><td colspan="2" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">Instrument of Amendment to the MDU Resources Group, Inc. 401(k) Retirement Plan, dated August 29, 2012, filed as Exhibit 10(b) to Form 10-Q for the quarter ended September 30, 2012, filed on November 7, 2012, in File No. 1-3480.</font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div></td><td colspan="2" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">*4.13</font></div></td><td colspan="2" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">Instrument of Amendment to the MDU Resources Group, Inc. 401(k) Retirement Plan, dated December 19, 2012, filed as Exhibit 10(z) to Form 10-K for the year ended December 31, 2012, filed on February 28, 2013, in File No. 1-3480.</font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div></td><td colspan="2" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">*4.14</font></div></td><td colspan="2" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">Instrument of Amendment to the MDU Resources Group, Inc. 401(k) Retirement Plan, dated September 9, 2013, filed as Exhibit 10(b) to Form 10-Q for the quarter ended September 30, 2013, filed on November 7, 2013, in File No. 1-3480.</font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div></td><td colspan="2" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">*4.15</font></div></td><td colspan="2" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">Instrument of Amendment to the MDU Resources Group, Inc. 401(k) Retirement Plan, dated September 9, 2013, filed as Exhibit 10(c) to Form 10-Q for the quarter ended September 30, 2013, filed on November 7, 2013, in File No. 1-3480.</font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div></td><td colspan="2" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">*4.16</font></div></td><td colspan="2" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">Instrument of Amendment to the MDU Resources Group, Inc. 401(k) Retirement Plan, dated September 23, 2013, filed as Exhibit 10(d) to Form 10-Q for the quarter ended September 30, 2013, filed on November 7, 2013, in File No. 1-3480.</font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div></td><td colspan="2" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">*4.17</font></div></td><td colspan="2" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">Instrument of Amendment to the MDU Resources Group, Inc. 401(k) Retirement Plan, dated December 31, 2013, filed as Exhibit 10(aa) to Form 10-K for the year ended December 31, 2013, filed on February 21, 2014, in File No. 1-3480.</font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div></td><td colspan="2" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">*4.18</font></div></td><td colspan="2" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">Instrument of Amendment to the MDU Resources Group, Inc. 401(k) Retirement Plan, dated March 13, 2014, filed as Exhibit 10(b) to Form 10-Q for the quarter ended March 31, 2014, filed on May 7, 2014, in File No. 1-3480.</font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div></td><td colspan="2" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">*4.19</font></div></td><td colspan="2" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">Instrument of Amendment to the MDU Resources Group, Inc. 401(k) Retirement Plan, dated June 5, 2014, filed as Exhibit 10(a) to Form 10-Q for the quarter ended June 30, 2014, filed on August 8, 2014, in File No. 1-3480.</font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div></td><td colspan="2" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">4.20</font></div></td><td colspan="2" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">Instrument of Amendment to the MDU Resources Group, Inc. 401(k) Retirement Plan, dated July 7, 2014.</font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div></td><td colspan="2" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">4.21</font></div></td><td colspan="2" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">Instrument of Amendment to the MDU Resources Group, Inc. 401(k) Retirement Plan, dated August 18, 2014.</font></div><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;height:10px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td colspan="2" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;height:10px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">5.1</font></div></td><td colspan="2" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">Opinion of Paul K. Sandness, Esq., General Counsel to the Company.</font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div></td><td colspan="2" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">5.2</font></div></td><td colspan="2" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">Opinion of Duane Morris LLP, counsel to the Company.</font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div></td><td colspan="2" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">23.1</font></div></td><td colspan="2" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">Consent of Deloitte &amp; Touche LLP.</font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div></td><td colspan="2" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">23.2</font></div></td><td colspan="2" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">Consent of Baker Tilly Virchow Krause, LLP.</font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div></td><td colspan="2" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">23.3</font></div></td><td colspan="2" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">The consents of Paul K. Sandness and Duane Morris LLP are contained in their opinions filed as Exhibits 5.1 and 5.2, respectively, hereto.</font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div></td><td colspan="2" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">24</font></div></td><td colspan="2" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">Power of Attorney (see signature pages).</font></div></td></tr><tr><td colspan="3" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">_______________________</font></div></td></tr><tr><td colspan="3" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">*Previously filed and incorporated herein by reference.</font></div></td></tr></table></div></div><div style="line-height:120%;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><br><div><div style="line-height:120%;text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">II-5</font></div></div><hr style="page-break-after:always"><a name="sCEB4F86D9E88CA23EC16EF8C6BC955B1"></a><div></div><br><div style="line-height:120%;text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">We will submit or have submitted the MDU Resources Group, Inc. 401(k) Retirement Plan and any amendment thereto to the Internal Revenue Service (the &#8220;IRS&#8221;) in a timely manner and have made or will make all changes required by the IRS in order to qualify the plan, as amended, under Section 401 of the Internal Revenue Code.</font></div><div style="line-height:120%;text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;font-weight:bold;">Item 9. Undertakings.</font></div><div style="line-height:120%;padding-top:16px;text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;(a)&#160;&#160;The undersigned registrant hereby undertakes:</font></div><div style="line-height:115%;padding-top:16px;text-align:left;padding-left:108px;text-indent:-108px;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;(1)&#160;&#160;&#160;To file, during any period in which offers or sales are being made, a post-effective amendment to this registration statement:</font></div><div style="line-height:115%;padding-top:16px;text-align:left;padding-left:132px;text-indent:-132px;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;(i)&#160;&#160;To include any prospectus required by section 10(a)(3) of the Securities Act of 1933;</font></div><div style="line-height:115%;padding-top:16px;text-align:left;padding-left:132px;text-indent:-132px;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;(ii)&#160;To reflect in the prospectus any facts or events arising after the effective date of the registration statement (or the most recent post-effective amendment thereof) which, individually or in the aggregate, represent a fundamental change in the information set forth in the registration statement. Notwithstanding the foregoing, any increase or decrease in volume of securities offered (if the total dollar value of securities offered would not exceed that which was registered) and any deviation from the low or high end of the estimated maximum offering range may be reflected in the form of prospectus filed with the Securities and Exchange Commission pursuant to Rule 424(b) if, in the aggregate, the changes in volume and price represent no more than a 20 percent change in the maximum aggregate offering price set forth in the &#8220;Calculation of Registration Fee&#8221; table in the effective registration statement;</font></div><div style="line-height:115%;padding-top:16px;text-align:left;padding-left:132px;text-indent:-132px;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;(iii)&#160;&#160;To include any material information with respect to the plan of distribution not previously disclosed in the registration statement or any material change to such information in the registration statement; </font></div><div style="line-height:115%;padding-top:16px;text-align:left;text-indent:48px;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;font-style:italic;">Provided, however</font><font style="font-family:inherit;font-size:12pt;">, That paragraphs (a)(1)(i) and (a)(1)(ii) do not apply if the registration statement is on Form S-8 and the information required to be included in a post-effective amendment by those paragraphs is contained in reports filed with or furnished to the Securities and Exchange Commission by the registrant pursuant to section 13 or section 15(d) of the Securities Exchange Act of 1934 that are incorporated by reference in the registration statement.</font></div><div style="line-height:115%;padding-top:16px;text-align:left;padding-left:114px;text-indent:-114px;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;(2)&#160;&#160;That, for the purpose of determining any liability under the Securities Act of 1933, each such post-effective amendment shall be deemed to be a new registration statement relating to the securities offered therein, and the offering of such securities at that time shall be deemed to be the initial </font><font style="font-family:inherit;font-size:12pt;font-style:italic;">bona fide</font><font style="font-family:inherit;font-size:12pt;">&#32;offering thereof.</font></div><div style="line-height:120%;padding-top:16px;text-align:left;padding-left:114px;text-indent:-114px;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;(3)&#160;&#160;To remove from registration by means of a post-effective amendment any of the securities being registered which remain unsold at the termination of the offering.</font></div><div style="line-height:120%;padding-top:16px;text-align:left;padding-left:78px;text-indent:-72px;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;(b)&#160;The undersigned registrant hereby undertakes that, for purposes of determining any liability under the Securities Act of 1933, each filing of the registrant&#8217;s annual report </font></div><br><div><div style="line-height:120%;text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">II-6</font></div></div><hr style="page-break-after:always"><a name="sCEB4F86D9E88CA23EC16EF8C6BC955B1"></a><div></div><br><div style="line-height:120%;text-align:left;padding-left:84px;text-indent:-84px;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;text-align:left;padding-left:84px;text-indent:-84px;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;pursuant to section 13(a) or section 15(d) of the Securities Exchange Act of 1934 (and, where applicable, each filing of an employee benefit plan&#8217;s annual report pursuant to section 15(d) of the Securities Exchange Act of 1934) that is incorporated by reference in the registration statement shall be deemed to be a new registration statement relating to the securities offered therein, and the offering of such securities at that time shall be deemed to be the initial </font><font style="font-family:inherit;font-size:12pt;font-style:italic;">bona fide</font><font style="font-family:inherit;font-size:12pt;">&#32;offering thereof.</font></div><div style="line-height:120%;text-align:left;padding-left:84px;text-indent:-84px;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;text-align:left;padding-left:84px;text-indent:-84px;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;(h)&#160;&#160;Insofar as indemnification for liabilities arising under the Securities Act of 1933 may be permitted to directors, officers and controlling persons of the registrant pursuant to the foregoing provisions, or otherwise, the registrant has been advised that in the opinion of the Securities and Exchange Commission such indemnification is against public policy as expressed in the Act and is, therefore, unenforceable. In the event that a claim for indemnification against such liabilities (other than the payment by the registrant of expenses incurred or paid by a director, officer or controlling person of the registrant in the successful defense of any action, suit or proceeding) is asserted by such director, officer or controlling person in connection with the securities being registered, the registrant will, unless in the opinion of its counsel the matter has been settled by controlling precedent, submit to a court of appropriate jurisdiction the question whether such indemnification by it is against public policy as expressed in the Act and will be governed by the final adjudication of such issue.</font></div><br><div><div style="line-height:120%;text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">II-7</font></div></div><hr style="page-break-after:always"><a name="sCEB4F86D9E88CA23EC16EF8C6BC955B1"></a><div></div><br><div style="line-height:120%;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">POWER OF ATTORNEY</font></div><div style="line-height:120%;text-align:center;padding-left:30px;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;text-align:left;padding-left:30px;text-indent:78px;font-size:12pt;"><font style="font-family:inherit;font-size:10pt;"></font><font style="font-family:inherit;font-size:12pt;">Each director and/or officer of the registrant whose signature appears below hereby&#160;appoints the agents for service named on the cover of this registration statement, and&#160;each&#160;of&#160;them severally, as his/her attorney-in-fact to sign in his/her name and behalf, in&#160;any&#160;and&#160;all capacities stated below, and to file with the Securities and Exchange Commission,&#160;any and all amendments, including post-effective amendments, to this registration&#160;statement, and the registrant hereby also appoints each such agent for service as&#160;its&#160;attorney-in-fact with like authority to sign and file any such amendment in its name and&#160;behalf.</font></div><div style="line-height:120%;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">SIGNATURES</font></div><div style="line-height:120%;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;text-align:left;padding-left:30px;text-indent:78px;font-size:12pt;"><font style="font-family:inherit;font-size:10pt;"></font><font style="font-family:inherit;font-size:12pt;text-decoration:underline;">The Registrant</font><font style="font-family:inherit;font-size:12pt;">. Pursuant to the requirements of the Securities Act of 1933, the registrant&#160;certifies that it has reasonable grounds to believe that it meets all of the requirements&#160;for&#160;filing on Form S-8 and has duly caused this registration statement to be signed&#160;on&#160;its behalf by the undersigned, thereunto duly authorized, in the City of Bismarck,&#160;State&#160;of&#160;North Dakota, on the 25th day of August, 2014.</font></div><div style="line-height:100%;text-align:center;padding-left:30px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><div style="line-height:120%;text-align:center;font-size:12pt;"><div style="padding-left:0px;text-indent:0px;line-height:normal;padding-top:10px;"><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman;font-size:10pt;margin-left:auto;margin-right:auto;width:81.62393162393163%;border-collapse:collapse;text-align:left;"><tr><td colspan="3"></td></tr><tr><td width="52.35602094240838%"></td><td width="6.282722513089005%"></td><td width="41.361256544502616%"></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div></td><td colspan="2" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:1px;padding-right:2px;"><div style="padding-bottom:1px;text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">MDU RESOURCES GROUP, INC.</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div></td><td colspan="2" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:1px;padding-right:2px;"><div style="padding-bottom:1px;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div></td><td colspan="2" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:1px;padding-right:2px;"><div style="padding-bottom:1px;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:1px;padding-right:2px;"><div style="padding-bottom:1px;text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">By:</font></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:1px;padding-right:2px;"><div style="padding-bottom:1px;text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">/s/ David L. Goodin</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:1px;padding-right:2px;"><div style="padding-bottom:1px;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:1px;padding-right:2px;"><div style="padding-bottom:1px;text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">David L. Goodin</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:1px;padding-right:2px;"><div style="padding-bottom:1px;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:1px;padding-right:2px;"><div style="padding-bottom:1px;text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">President and</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:1px;padding-right:2px;"><div style="padding-bottom:1px;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:1px;padding-right:2px;"><div style="padding-bottom:1px;text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">Chief Executive Officer</font></div></td></tr></table></div></div><div style="line-height:120%;text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><div style="line-height:120%;text-align:center;padding-left:30px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><div style="line-height:120%;padding-bottom:8px;text-align:left;padding-left:30px;text-indent:78px;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">Pursuant to the requirements of the Securities Act of 1933, this registration statement&#160;has been signed by the following persons in the capacities and on the dates indicated.</font></div><div style="line-height:120%;padding-bottom:8px;text-align:center;padding-left:30px;font-size:12pt;"><div style="padding-left:0px;text-indent:0px;line-height:normal;padding-top:10px;"><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman;font-size:10pt;margin-left:auto;margin-right:auto;width:595px;border-collapse:collapse;text-align:left;"><tr><td colspan="3"></td></tr><tr><td width="272px"></td><td width="192px"></td><td width="130px"></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;text-decoration:underline;">Signature</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;text-decoration:underline;">Title</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;text-decoration:underline;">Date</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;height:37px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;height:37px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;height:37px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td></tr><tr><td style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">/s/ David L. Goodin</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">Chief Executive Officer and </font></div></td><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">August 25, 2014</font></div></td></tr><tr><td style="vertical-align:middle;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">David L. Goodin <br>(President and Chief Executive Officer)</font></div></td><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">Director</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;height:36px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;height:36px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;height:36px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td></tr><tr><td style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">/s/ Doran N. Schwartz</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">Chief Financial Officer</font></div></td><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">August 25, 2014</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">Doran N. Schwartz <br>(Vice President and Chief Financial Officer)</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td></tr></table></div></div><div style="line-height:120%;padding-bottom:8px;text-align:center;padding-left:30px;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><br><div><div style="line-height:120%;text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">II-8</font></div></div><hr style="page-break-after:always"><a name="sCEB4F86D9E88CA23EC16EF8C6BC955B1"></a><div></div><br><div style="line-height:120%;text-align:center;padding-left:30px;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;text-align:center;padding-left:30px;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;text-align:center;padding-left:30px;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;text-align:left;padding-left:30px;font-size:12pt;"><div style="padding-left:0px;text-indent:0px;line-height:normal;padding-top:10px;"><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman;font-size:10pt;width:95.08547008547008%;border-collapse:collapse;text-align:left;"><tr><td colspan="3"></td></tr><tr><td width="45.842696629213485%"></td><td width="32.13483146067416%"></td><td width="22.02247191011236%"></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;text-decoration:underline;">Signature</font></div></td><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;text-decoration:underline;">Title</font></div></td><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;text-decoration:underline;">Date</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div></td></tr><tr><td style="vertical-align:top;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">/s/ Nathan W. Ring</font></div></td><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">Chief Accounting Officer</font></div></td><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">August 25, 2014</font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">Nathan W. Ring</font></div><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">(Vice President, Controller and Chief </font></div><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">Accounting Officer)</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:16px;padding-right:2px;"><div style="padding-bottom:16px;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;height:36px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;height:36px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;height:36px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td></tr><tr><td style="vertical-align:top;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">/s/ Harry J. Pearce          </font></div></td><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">Director</font></div></td><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">August 25, 2014</font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">Harry J. Pearce <br>(Chairman of the Board)</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;height:36px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;height:36px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;height:36px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td></tr><tr><td style="vertical-align:top;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">/s/ Thomas Everist</font></div></td><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">Director</font></div></td><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">August 25, 2014</font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">Thomas Everist</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;height:36px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;height:36px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;height:36px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td></tr><tr><td style="vertical-align:top;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">/s/ Karen B. Fagg      </font></div></td><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">Director</font></div></td><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">August 25, 2014</font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">Karen B. Fagg</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;height:36px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;height:36px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;height:36px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td></tr><tr><td style="vertical-align:top;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">/s/ Mark A. Hellerstein      </font></div></td><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">Director</font></div></td><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">August 25, 2014</font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">Mark A. Hellerstein</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;height:36px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;height:36px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;height:36px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td></tr><tr><td style="vertical-align:top;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">/s/ A. Bart Holaday             </font></div></td><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">Director</font></div></td><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">August 25, 2014</font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">A. 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Johnson      </font></div></td><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">Director</font></div></td><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">August 25, 2014</font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">Dennis W. Johnson</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;height:36px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;height:36px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;height:36px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td></tr><tr><td style="vertical-align:top;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">/s/ William E. McCracken      </font></div></td><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">Director</font></div></td><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">August 25, 2014</font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">William E. McCracken</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;height:37px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;height:37px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;height:37px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td></tr><tr><td style="vertical-align:top;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">/s/ Patricia L. Moss      </font></div></td><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">Director</font></div></td><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">August 25, 2014</font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">Patricia L. Moss</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;height:36px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;height:36px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;height:36px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td></tr><tr><td style="vertical-align:top;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">/s/ J. Kent Wells      </font></div></td><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">Director</font></div></td><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">August 25, 2014</font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">J. Kent Wells</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;height:36px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;height:36px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;height:36px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td></tr><tr><td style="vertical-align:top;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">/s/ John K. Wilson      </font></div></td><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">Director</font></div></td><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">August 25, 2014</font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">John K. Wilson</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td></tr></table></div></div><br><div><div style="line-height:120%;text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">II-9</font></div></div><hr style="page-break-after:always"><a name="sCEB4F86D9E88CA23EC16EF8C6BC955B1"></a><div></div><br><div style="line-height:120%;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">POWER OF ATTORNEY</font></div><div style="line-height:120%;text-align:center;padding-left:30px;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;text-align:left;padding-left:30px;text-indent:78px;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">The MDU Resources Group, Inc. 401(k) Retirement Plan hereby appoints the agents&#160;for service named on the cover of this registration statement, and each of them severally, as its attorney-in-fact to sign in its name and behalf and to file with the Securities&#160;and Exchange Commission any and all amendments including post-effective amendments to this registration statement.</font></div><div style="line-height:120%;text-align:left;padding-left:30px;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;padding-bottom:24px;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">SIGNATURES</font></div><div style="line-height:120%;text-align:left;padding-left:30px;text-indent:78px;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"></font><font style="font-family:inherit;font-size:12pt;text-decoration:underline;">The Plan</font><font style="font-family:inherit;font-size:12pt;">.&#160;Pursuant to the requirements of the Securities Act of 1933, the MDU Resources Group, Inc. Employee Benefits Committee, which functions as the 401(k) Retirement Plan Committee, has duly caused this registration statement to be signed on its&#160;behalf by the undersigned, thereunto duly authorized, in the City of Bismarck, State of North Dakota, on the 25th day of August, 2014.</font></div><div style="line-height:120%;text-align:center;font-size:12pt;"><div style="padding-left:0px;text-indent:0px;line-height:normal;padding-top:10px;"><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman;font-size:10pt;margin-left:auto;margin-right:auto;width:509px;border-collapse:collapse;text-align:left;"><tr><td colspan="3"></td></tr><tr><td width="261px"></td><td width="32px"></td><td width="216px"></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td colspan="2" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">MDU RESOURCES GROUP, INC.</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td colspan="2" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">401(k) RETIREMENT PLAN</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;height:18px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td colspan="2" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;height:18px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;height:18px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td colspan="2" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;height:18px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">By:</font></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">/s/ Doran N. Schwartz</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">Doran N. Schwartz, Chairman</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">MDU Resources Group, Inc.</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">Employee Benefits Committee</font></div></td></tr></table></div></div><div style="line-height:120%;text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><div style="line-height:120%;text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><a name="s9E17C06D717CD642D1C3EF8C5B8406F7"></a><div style="line-height:120%;padding-bottom:16px;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><div style="line-height:120%;padding-bottom:16px;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><div style="line-height:120%;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><br><div><div style="line-height:120%;text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">II-10</font></div></div><hr style="page-break-after:always"><div></div><br><div style="line-height:120%;padding-bottom:16px;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;text-decoration:underline;">EXHIBIT INDEX</font></div><div style="line-height:120%;padding-bottom:16px;text-align:center;font-size:12pt;"><div style="padding-left:0px;text-indent:0px;line-height:normal;padding-top:10px;"><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman;font-size:10pt;margin-left:auto;margin-right:auto;width:636px;border-collapse:collapse;text-align:left;"><tr><td colspan="3"></td></tr><tr><td width="65px"></td><td width="160px"></td><td width="410px"></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">*4.1</font></div></td><td colspan="2" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">Restated Certificate of Incorporation of the Company, as amended, filed as Exhibit 3(a) to Form 10-Q for the quarter ended September 30, 2010, filed on November 3, 2010, in File No. 1-3480.</font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div></td><td colspan="2" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">*4.2</font></div></td><td colspan="2" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">Company Bylaws, as amended and restated August 14, 2014, filed as Exhibit 3.1 to Form 8-K dated August 14, 2014, filed on August 19, 2014, in File No. 1-3480.</font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div></td><td colspan="2" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">*4.3</font></div></td><td colspan="2" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">Indenture, dated as of December 15, 2003, between the Company and The Bank of New York, as trustee, filed as Exhibit 4(f) to Form S-8, on January 21, 2004, in Registration No. 333-112035.</font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div></td><td colspan="2" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">*4.4</font></div></td><td colspan="2" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">First Supplemental Indenture, dated as of November 17, 2009, between the Company and The Bank of New York Mellon, as trustee, filed as Exhibit 4(c) to Form 10-K for the year ended December 31, 2009, filed on February 17, 2010, in File No. 1-3480.</font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div></td><td colspan="2" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">*4.5</font></div></td><td colspan="2" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">MDU Resources Group, Inc. 401(k) Retirement Plan, as restated March 1, 2011, filed as Exhibit 10(a) to Form 10-Q for the quarter ended September 30, 2011, filed on November 4, 2011, in File No. 1-3480.</font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div></td><td colspan="2" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">*4.6</font></div></td><td colspan="2" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">Instrument of Amendment to the MDU Resources Group, Inc. 401(k) Retirement Plan, dated March 29, 2011, filed as Exhibit 10(b) to Form 10-Q for the quarter ended March 31, 2011, filed on May 5, 2011, in File No. 1-3480.</font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div></td><td colspan="2" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">*4.7</font></div></td><td colspan="2" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">Instrument of Amendment to the MDU Resources Group, Inc. 401(k) Retirement Plan, dated June 30, 2011, filed as Exhibit 10(d) to Form 10-Q for the quarter ended June 30, 2011, filed on August 5, 2011, in File No. 1-3480.</font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div></td><td colspan="2" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">*4.8</font></div></td><td colspan="2" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">Instrument of Amendment to the MDU Resources Group, Inc. 401(k) Retirement Plan, dated September 9, 2011, filed as Exhibit 10(b) to Form 10-Q for the quarter ended September 30, 2011, filed on November 4, 2011, in File No. 1-3480.</font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div></td><td colspan="2" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">*4.9</font></div></td><td colspan="2" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">Instrument of Amendment to the MDU Resources Group, Inc. 401(k) Retirement Plan, dated December 29, 2011, filed as Exhibit 10(ac) to Form 10-K for the year ended December 31, 2011, filed on February 24, 2012, in File No. 1-3480.</font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div></td><td colspan="2" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">*4.10</font></div></td><td colspan="2" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">Instrument of Amendment to the MDU Resources Group, Inc. 401(k) Retirement Plan, dated May 24, 2012, filed as Exhibit 10(b) to Form 10-Q for the quarter ended June 30, 2012, filed on August 7, 2012, in File No. 1-3480.</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;height:8px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td colspan="2" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;height:8px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">*4.11</font></div></td><td colspan="2" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">Instrument of Amendment to the MDU Resources Group, Inc. 401(k) Retirement Plan, dated August 29, 2012, filed as Exhibit 10(a) to Form 10-Q for the quarter ended September 30, 2012, filed on November 7, 2012, in File No. 1-3480.</font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div></td><td colspan="2" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">*4.12</font></div></td><td colspan="2" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">Instrument of Amendment to the MDU Resources Group, Inc. 401(k) Retirement Plan, dated August 29, 2012, filed as Exhibit 10(b) to Form 10-Q for the quarter ended September 30, 2012, filed on November 7, 2012, in File No. 1-3480.</font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div></td><td colspan="2" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">*4.13</font></div></td><td colspan="2" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">Instrument of Amendment to the MDU Resources Group, Inc. 401(k) Retirement Plan, dated December 19, 2012, filed as Exhibit 10(z) to Form 10-K for the year ended December 31, 2012, filed on February 28, 2013, in File No. 1-3480.</font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div></td><td colspan="2" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">*4.14</font></div></td><td colspan="2" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">Instrument of Amendment to the MDU Resources Group, Inc. 401(k) Retirement Plan, dated September 9, 2013, filed as Exhibit 10(b) to Form 10-Q for the quarter ended September 30, 2013, filed on November 7, 2013, in File No. 1-3480.</font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div></td><td colspan="2" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div></td></tr></table></div></div><br><div><div style="line-height:120%;text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">II-</font><font style="font-family:inherit;font-size:10pt;">11</font></div></div><hr style="page-break-after:always"><div></div><br><div style="line-height:120%;padding-bottom:16px;text-align:center;font-size:12pt;"><div style="padding-left:0px;text-indent:0px;line-height:normal;padding-top:10px;"><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman;font-size:10pt;margin-left:auto;margin-right:auto;width:636px;border-collapse:collapse;text-align:left;"><tr><td colspan="3"></td></tr><tr><td width="65px"></td><td width="160px"></td><td width="410px"></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">*4.15</font></div></td><td colspan="2" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">Instrument of Amendment to the MDU Resources Group, Inc. 401(k) Retirement Plan, dated September 9, 2013, filed as Exhibit 10(c) to Form 10-Q for the quarter ended September 30, 2013, filed on November 7, 2013, in File No. 1-3480.</font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div></td><td colspan="2" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">*4.16</font></div></td><td colspan="2" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">Instrument of Amendment to the MDU Resources Group, Inc. 401(k) Retirement Plan, dated September 23, 2013, filed as Exhibit 10(d) to Form 10-Q for the quarter ended September 30, 2013, filed on November 7, 2013, in File No. 1-3480.</font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div></td><td colspan="2" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">*4.17</font></div></td><td colspan="2" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">Instrument of Amendment to the MDU Resources Group, Inc. 401(k) Retirement Plan, dated December 31, 2013, filed as Exhibit 10(aa) to Form 10-K for the year ended December 31, 2013, filed on February 21, 2014, in File No. 1-3480.</font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div></td><td colspan="2" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">*4.18</font></div></td><td colspan="2" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">Instrument of Amendment to the MDU Resources Group, Inc. 401(k) Retirement Plan, dated March 13, 2014, filed as Exhibit 10(b) to Form 10-Q for the quarter ended March 31, 2014, filed on May 7, 2014, in File No. 1-3480.</font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div></td><td colspan="2" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">*4.19</font></div></td><td colspan="2" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">Instrument of Amendment to the MDU Resources Group, Inc. 401(k) Retirement Plan, dated June 5, 2014, filed as Exhibit 10(a) to Form 10-Q for the quarter ended June 30, 2014, filed on August 8, 2014, in File No. 1-3480.</font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div></td><td colspan="2" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">4.20</font></div></td><td colspan="2" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">Instrument of Amendment to the MDU Resources Group, Inc. 401(k) Retirement Plan, dated July 7, 2014.</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;height:8px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td colspan="2" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;height:8px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">4.21</font></div></td><td colspan="2" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">Instrument of Amendment to the MDU Resources Group, Inc. 401(k) Retirement Plan, dated August 18, 2014.<br></font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div></td><td colspan="2" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">5.1</font></div></td><td colspan="2" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">Opinion of Paul K. Sandness, Esq., General Counsel to the Company.</font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div></td><td colspan="2" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">5.2</font></div></td><td colspan="2" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">Opinion of Duane Morris LLP, counsel to the Company.</font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div></td><td colspan="2" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">23.1</font></div></td><td colspan="2" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">Consent of Deloitte &amp; Touche LLP.</font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div></td><td colspan="2" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">23.2</font></div></td><td colspan="2" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">Consent of Baker Tilly Virchow Krause, LLP.</font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div></td><td colspan="2" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">23.3</font></div></td><td colspan="2" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">The consents of Paul K. Sandness and Duane Morris LLP are contained in their opinions filed as Exhibits 5.1 and 5.2, respectively, hereto.</font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div></td><td colspan="2" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">24</font></div></td><td colspan="2" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">Power of Attorney (see signature pages).</font></div></td></tr><tr><td colspan="3" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">_____________________</font></div></td></tr><tr><td colspan="3" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">*Previously filed and incorporated herein by reference.</font></div></td></tr></table></div></div><div style="line-height:120%;padding-bottom:16px;text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><div style="line-height:120%;padding-bottom:16px;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><br><div><div style="line-height:120%;text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">II-</font><font style="font-family:inherit;font-size:10pt;">12</font></div></div>	</body>
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<TYPE>EX-4.20
<SEQUENCE>3
<FILENAME>exhibit420-401kamendment.htm
<DESCRIPTION>EXHIBIT
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		<title>Wdesk | Exhibit 4.20 - 401K Amendment </title>
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<a name="s13a33efdbff34f388e0227d16345c39c"></a><div><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div></div><br><div style="line-height:120%;padding-bottom:16px;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;padding-bottom:16px;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;padding-bottom:16px;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;padding-bottom:16px;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;padding-bottom:16px;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;padding-bottom:16px;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;padding-bottom:16px;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;padding-bottom:16px;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;padding-bottom:16px;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;padding-bottom:16px;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;padding-bottom:16px;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;padding-bottom:16px;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">EXHIBIT 4.20</font></div><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><br><div></div><hr style="page-break-after:always"><a name="sbe95cb60e3d3420ea6b18349fb53a115"></a><div><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><div style="line-height:120%;text-align:right;font-size:12pt;"><font style="font-family:Arial;font-size:12pt;">Exhibit 4.20</font></div></div><br><div style="line-height:120%;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><div style="line-height:120%;text-align:center;font-size:12pt;"><font style="font-family:Arial;font-size:12pt;font-weight:bold;">INSTRUMENT OF AMENDMENT TO THE</font></div><div style="line-height:120%;text-align:center;font-size:12pt;"><font style="font-family:Arial;font-size:12pt;font-weight:bold;">MDU RESOURCES GROUP, INC.</font></div><div style="line-height:120%;text-align:center;font-size:12pt;"><font style="font-family:Arial;font-size:12pt;font-weight:bold;">401(k) RETIREMENT PLAN</font></div><div style="line-height:120%;text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><div style="line-height:120%;text-align:justify;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><div style="line-height:120%;text-align:justify;font-size:12pt;"><font style="font-family:Arial;font-size:12pt;">The MDU Resources Group, Inc. 401(k) Retirement Plan (as amended and restated March&#160;1, 2011) (the &#8220;K-Plan&#8221;), is hereby further amended, effective July 14, 2014, unless&#160;otherwise indicated as follows:</font></div><div style="line-height:120%;text-align:justify;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman; font-size:10pt;"><tr><td style="width:48px;"></td><td></td></tr><tr><td style="vertical-align:top"><div style="line-height:120%;font-size:12pt;padding-left:0px;"><font style="font-family:Arial;font-size:12pt;">1.</font></div></td><td style="vertical-align:top;"><div style="line-height:120%;text-align:justify;font-size:12pt;"><font style="font-family:Arial;font-size:12pt;">By replacing the definition of &#8220;Eligible Employee&#8221; in Article I of the K-Plan with the following:</font></div></td></tr></table><div style="line-height:120%;text-align:justify;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><div style="line-height:120%;text-align:justify;padding-left:48px;font-size:12pt;"><font style="font-family:Arial;font-size:12pt;text-decoration:underline;">Eligible Employee</font><font style="font-family:Arial;font-size:12pt;">&#32;- An &#8220;Eligible Employee&#8221; means each regular full-time Employee or part-time Employee scheduled to work at least 1,000 hours a year who is at least 18 years of age and who is actively employed by the Employer other than as a student, intern, or temporary employee as defined by the payroll practices of the Employer; provided, however, that a part-time Employee scheduled to work less than 1,000 hours a year who completes more than 1,000 hours of service within a twelve-month period beginning on the Employee&#8217;s employment date or in any subsequent Plan Year shall be an Eligible Employee. Notwithstanding the foregoing, unless specifically approved as an Eligible Employee by the Committee, an Employee of an Employer shall not be an Eligible Employee during any time when such Employee is 1) eligible to participate in a retirement plan which is a multi-employer plan as defined in Section 3(37) of ERISA to which the Employer contributes, or 2) covered by a collectively bargained unit which has not bargained for the Plan for such Employee.  In addition, notwithstanding any provision of the Plan to the contrary, an Employee of an Employer shall not be an Eligible Employee if the Employee is classified as a student, intern, or temporary employee as defined by the payroll practices of the Employer, except that Davis-Bacon Employees described in Paragraph G-4 of Supplement G to the Plan who are temporary employees will become Eligible Employees upon the completion of one Hour of Service, and a student, intern, or temporary employee as defined by the payroll practices of the Employer who has completed more than 1,000 hours of service within a twelve-month period ending on or before December 31, 2010 shall be an Eligible Employee.</font></div><div style="line-height:120%;text-align:justify;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><div style="line-height:120%;text-align:justify;font-size:12pt;"><font style="font-family:Arial;font-size:12pt;text-decoration:underline;">Explanation: This amendment allows Participating Affiliates the ability, under certain circumstances, to request and obtain approval to allow employees who participate in a multi-employer plan to participate in K-Plan.</font></div><div style="line-height:120%;text-align:justify;padding-left:48px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman; font-size:10pt;"><tr><td style="width:48px;"></td><td></td></tr><tr><td style="vertical-align:top"><div style="line-height:120%;font-size:12pt;padding-left:0px;"><font style="font-family:Arial;font-size:12pt;">2.</font></div></td><td style="vertical-align:top;"><div style="line-height:120%;text-align:justify;font-size:12pt;"><font style="font-family:Arial;font-size:12pt;">By replacing Supplement D-7, </font><font style="font-family:Arial;font-size:12pt;text-decoration:underline;">Provisions Relating to the JTL Group, Inc. Retirement Contribution Feature</font><font style="font-family:Arial;font-size:12pt;">, in its entirety, with the following:</font></div></td></tr></table><div style="line-height:120%;text-align:justify;padding-left:48px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><br><div><div style="line-height:120%;text-align:center;font-size:12pt;"><font style="font-family:Arial;font-size:12pt;">1</font></div></div><hr style="page-break-after:always"><a name="sbe95cb60e3d3420ea6b18349fb53a115"></a><div></div><br><div style="line-height:232%;text-align:center;padding-left:89px;font-size:12pt;"><font style="font-family:Arial;font-size:12pt;text-decoration:underline;">Supplement D-7</font></div><div style="line-height:120%;text-align:center;padding-left:89px;font-size:12pt;"><font style="font-family:Arial;font-size:12pt;"><br></font></div><div style="line-height:120%;text-align:center;padding-left:89px;font-size:12pt;"><font style="font-family:Arial;font-size:12pt;text-decoration:underline;">Provisions Relating to the</font></div><div style="line-height:120%;text-align:center;padding-left:89px;font-size:12pt;"><font style="font-family:Arial;font-size:12pt;text-decoration:underline;">JTL Group, Inc.</font></div><div style="line-height:120%;text-align:center;padding-left:89px;font-size:12pt;"><font style="font-family:Arial;font-size:12pt;text-decoration:underline;">Retirement Contribution Feature</font></div><div style="line-height:120%;text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman; font-size:10pt;"><tr><td style="width:137px;"></td><td></td></tr><tr><td style="vertical-align:top"><div style="line-height:120%;font-size:12pt;padding-left:89px;"><font style="font-family:Arial;font-size:12pt;">D-7-1</font></div></td><td style="vertical-align:top;"><div style="line-height:120%;text-align:justify;font-size:12pt;"><font style="font-family:Arial;font-size:12pt;text-decoration:underline;">Introduction.</font><font style="font-family:Arial;font-size:12pt;">&#32;Effective January 1, 2005, JTL Group, Inc. (&#8220;JTL&#8221;) a Participating Affiliate in the Plan hereby established the Retirement Contribution Feature as described in this Supplement D-7. This Retirement Contribution shall be in addition to all other contributions provided by JTL pursuant to the Plan. </font></div></td></tr></table><div style="line-height:120%;text-align:justify;padding-left:137px;text-indent:-48px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman; font-size:10pt;"><tr><td style="width:137px;"></td><td></td></tr><tr><td style="vertical-align:top"><div style="line-height:120%;font-size:12pt;padding-left:89px;"><font style="font-family:Arial;font-size:12pt;">D-7-2</font></div></td><td style="vertical-align:top;"><div style="line-height:120%;text-align:justify;font-size:12pt;"><font style="font-family:Arial;font-size:12pt;text-decoration:underline;">Eligibility to Share in the Retirement Contribution.</font><font style="font-family:Arial;font-size:12pt;">&#32;In order to share in the allocation of any Retirement Contribution made by JTL pursuant to Paragraph 3 below for a given Plan Year, Participants must be an Eligible Employee of JTL. Unless specifically bargained for, eligible Employees covered by a collective bargaining agreement shall not be eligible to share in this Retirement Contribution feature, with the exception of, Eligible Employees of JTL participating in the Operating Engineers Local No. 800 &amp; The Wyoming Contractors&#8217; Association, Inc. Pension Trust Fund for Wyoming who shall be eligible to participate in this Retirement Contribution Feature, effective July 14, 2014. Participants who meet the preceding requirements are referred to herein as &#8220;Supplement D-7 Participants.&#8221;</font></div></td></tr></table><div style="line-height:120%;text-align:justify;padding-left:137px;text-indent:-48px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman; font-size:10pt;"><tr><td style="width:137px;"></td><td></td></tr><tr><td style="vertical-align:top"><div style="line-height:120%;font-size:12pt;padding-left:89px;"><font style="font-family:Arial;font-size:12pt;">D-7-3</font></div></td><td style="vertical-align:top;"><div style="line-height:120%;text-align:justify;font-size:12pt;"><font style="font-family:Arial;font-size:12pt;text-decoration:underline;">Amount of Retirement Contribution Allocation.</font><font style="font-family:Arial;font-size:12pt;">&#32;For each Plan Year, JTL shall provide eligible hourly Participants $1.55 (effective April 1, 2014) per hour of service as a Retirement Contribution. The amount of any such contribution for a Plan Year will be allocated to Supplement D-7 hourly Participants for each hour of service for which the Participant receives compensation, excluding Hours of Service pursuant to a prevailing wage agreement. In addition, JTL will credit eligible salaried Participants with a contribution equal to eight percent (8%) of Compensation. The amount of any such contribution for a Plan Year shall be allocated to Supplement D-7 Participants based upon their Compensation, excluding bonuses received while employed by the identified Participating Affiliate.</font></div></td></tr></table><div style="line-height:120%;text-align:justify;padding-left:137px;text-indent:-48px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman; font-size:10pt;"><tr><td style="width:137px;"></td><td></td></tr><tr><td style="vertical-align:top"><div style="line-height:120%;font-size:12pt;padding-left:89px;"><font style="font-family:Arial;font-size:12pt;">D-7-4</font></div></td><td style="vertical-align:top;"><div style="line-height:120%;text-align:justify;font-size:12pt;"><font style="font-family:Arial;font-size:12pt;text-decoration:underline;">Vesting.</font><font style="font-family:Arial;font-size:12pt;">&#32;Notwithstanding anything in Section 4.2 to the contrary, Supplement D-7 Participants shall be vested in their Retirement Contribution only upon completing three (3) years of Vesting Service as defined below; provided, however that Supplement D-7 Participants who were employed by Star Aggregates, Inc. on August 31, 2007, shall be fully vested.  </font></div></td></tr></table><br><div><div style="line-height:120%;text-align:center;font-size:12pt;"><font style="font-family:Arial;font-size:12pt;">2</font></div></div><hr style="page-break-after:always"><a name="sbe95cb60e3d3420ea6b18349fb53a115"></a><div></div><br><div style="line-height:120%;text-align:justify;padding-left:137px;text-indent:-48px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><div style="line-height:120%;padding-bottom:13px;text-align:justify;padding-left:137px;font-size:12pt;"><font style="font-family:Arial;font-size:12pt;">A &#8220;Year of Vesting Service&#8221; means a Plan Year in which the Supplement D&#8209;7 Participant is compensated for at least 1,000 Hours of Service. Service with a Supplement D-7 Company, the Company, and all Affiliates shall be recognized for purposes of this Paragraph, including, but not limited to, service that occurred prior to the effective date of Supplement D-7, applying these rules as if the Supplement D-7 Company (and its affiliates at that time) were Affiliates under the Plan. Notwithstanding the foregoing, a Participant shall be fully vested in his or her Retirement Contribution Account upon death, Disability, or upon attaining age 60. </font></div><table cellpadding="0" cellspacing="0" style="padding-bottom:13px;font-family:Times New Roman; font-size:10pt;"><tr><td style="width:137px;"></td><td></td></tr><tr><td style="vertical-align:top"><div style="line-height:120%;font-size:12pt;padding-left:89px;"><font style="font-family:Arial;font-size:12pt;">D-7-5</font></div></td><td style="vertical-align:top;"><div style="line-height:120%;text-align:justify;font-size:12pt;"><font style="font-family:Arial;font-size:12pt;text-decoration:underline;">Use of Terms</font><font style="font-family:Arial;font-size:12pt;">. Terms used in this Supplement D-7 shall, unless defined in this Supplement D-7 or elsewhere noted, have the meanings given to those terms in the Plan.</font></div></td></tr></table><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman; font-size:10pt;"><tr><td style="width:137px;"></td><td></td></tr><tr><td style="vertical-align:top"><div style="line-height:120%;font-size:12pt;padding-left:89px;"><font style="font-family:Arial;font-size:12pt;">D-7-6</font></div></td><td style="vertical-align:top;"><div style="line-height:120%;text-align:justify;font-size:12pt;"><font style="font-family:Arial;font-size:12pt;text-decoration:underline;">Inconsistencies with the Plan</font><font style="font-family:Arial;font-size:12pt;">. The terms of this Supplement D&#8209;7 are a part of the Plan and supersede the provisions of the Plan to the extent necessary to eliminate inconsistencies between the Plan and the Supplement D-7.</font></div></td></tr></table><div style="line-height:120%;text-align:justify;padding-left:137px;text-indent:-48px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><div style="line-height:120%;text-align:justify;font-size:12pt;"><font style="font-family:Arial;font-size:12pt;text-decoration:underline;">Explanation: This amendment allows JTL Group, Inc. (JTL) employees who participate in the Operating Engineers Local No. 800 &amp; The Wyoming Contractors&#8217; Association, Inc. Pension Trust Fund for Wyoming to participate in JTL Retirement Contribution and be granted past service credit for vesting purposes.</font></div><div style="line-height:120%;text-align:justify;padding-left:96px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><div style="line-height:120%;text-align:justify;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman; font-size:10pt;"><tr><td style="width:48px;"></td><td></td></tr><tr><td style="vertical-align:top"><div style="line-height:120%;font-size:12pt;padding-left:0px;"><font style="font-family:Arial;font-size:12pt;">3.</font></div></td><td style="vertical-align:top;"><div style="line-height:120%;text-align:justify;font-size:12pt;"><font style="font-family:Arial;font-size:12pt;">By replacing the following entry in Schedule B:</font></div></td></tr></table><div style="line-height:120%;text-align:justify;padding-left:48px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><div style="line-height:120%;text-align:justify;padding-left:48px;font-size:12pt;"><font style="font-family:Arial;font-size:12pt;">JTL Group, Inc. shall make supplemental contributions on behalf of its Davis-Bacon Employees in such amount as may be necessary to satisfy the Prevailing Wage Law&#8217;s required fringe cost without regard to any employer Matching and Profit Sharing Contributions pursuant to Supplement G.</font></div><div style="line-height:120%;text-align:justify;padding-left:89px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><div style="line-height:120%;text-align:justify;padding-left:48px;font-size:12pt;"><font style="font-family:Arial;font-size:12pt;">Effective as of January 1, 2005, amended January 1, 2008, and amended July&#160;14, 2014.</font></div><div style="line-height:232%;text-align:justify;padding-left:41px;text-indent:6px;font-size:11pt;"><font style="font-family:Arial;font-size:11pt;">***************************************</font></div><div style="line-height:120%;text-align:justify;font-size:12pt;"><font style="font-family:Arial;font-size:12pt;text-decoration:underline;">Explanation: This amendment allows JTL Group, Inc. (JTL) employees who participate in the Operating Engineers Local No. 800 &amp; The Wyoming Contractors&#8217; Association, Inc. Pension Trust Fund for Wyoming to participate in the Supplement G Prevailing Wage (Davis-Bacon) feature.</font></div><div style="line-height:120%;text-align:justify;font-size:12pt;"><font style="font-family:Arial;font-size:12pt;"><br></font></div><br><div><div style="line-height:120%;text-align:center;font-size:12pt;"><font style="font-family:Arial;font-size:12pt;">3</font></div></div><hr style="page-break-after:always"><a name="sbe95cb60e3d3420ea6b18349fb53a115"></a><div></div><br><div style="line-height:120%;text-align:justify;text-indent:48px;font-size:12pt;"><font style="font-family:Arial;font-size:12pt;">IN WITNESS WHEREOF, MDU Resources Group, Inc., as Sponsoring Employer of the Plan, has caused this amendment to be duly executed by a member of the MDU Resources Group, Inc. Employee Benefits Committee (&#8220;Committee&#8221;) on this 7th day of July, 2014.</font></div><div style="line-height:120%;text-align:justify;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><div style="line-height:120%;text-align:justify;text-indent:48px;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;text-align:center;text-indent:48px;font-size:12pt;"><div style="padding-left:0px;text-indent:0px;line-height:normal;padding-top:10px;"><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman;font-size:10pt;margin-left:auto;margin-right:auto;width:573px;border-collapse:collapse;text-align:left;"><tr><td colspan="3"></td></tr><tr><td width="228px"></td><td width="33px"></td><td width="312px"></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:Arial;font-size:12pt;"><br></font></div></td><td colspan="2" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:Arial;font-size:12pt;">MDU RESOURCES GROUP, INC.</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:Arial;font-size:12pt;"><br></font></div></td><td colspan="2" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="font-size:12pt;"><font style="font-family:Arial;font-size:12pt;">&#160;&#160;&#160;EMPLOYEE BENEFITS COMMITTEE</font></div><div style="font-size:12pt;"><font style="font-family:Arial;font-size:12pt;"><br></font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:Arial;font-size:12pt;"><br></font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:Arial;font-size:12pt;"><br></font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:Arial;font-size:12pt;"><br></font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:Arial;font-size:12pt;"><br></font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:Arial;font-size:12pt;"><br></font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:Arial;font-size:12pt;"><br></font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:Arial;font-size:12pt;"><br></font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:Arial;font-size:12pt;">By:</font></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:Arial;font-size:12pt;">/s/ Doran N. Schwartz                            </font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:Arial;font-size:12pt;"><br></font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:Arial;font-size:12pt;"><br></font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:Arial;font-size:12pt;">Doran N. Schwartz, Chairman</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:Arial;font-size:12pt;"><br></font></div></td><td style="vertical-align:middle;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:Arial;font-size:12pt;"><br></font></div></td><td style="vertical-align:middle;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:Arial;font-size:12pt;"><br></font></div></td></tr></table></div></div><div style="line-height:120%;text-align:justify;font-size:12pt;"><font style="font-family:Arial;font-size:12pt;"><br></font></div><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><br><div><div style="line-height:120%;text-align:center;font-size:12pt;"><font style="font-family:Arial;font-size:12pt;">4</font></div></div>	</body>
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<TYPE>EX-4.21
<SEQUENCE>4
<FILENAME>exhibit421-401kamendment2.htm
<DESCRIPTION>EXHIBIT
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		<title>Wdesk | Exhibit 4.21 - 401K Amendment 2</title>
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<a name="sae5164cceb3d46878f53a36911d2bc8c"></a><div><div style="line-height:120%;text-align:center;font-size:12pt;"><font style="font-family:Arial;font-size:12pt;"><br></font></div></div><br><div style="line-height:120%;padding-bottom:16px;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;padding-bottom:16px;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;padding-bottom:16px;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;padding-bottom:16px;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;padding-bottom:16px;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;padding-bottom:16px;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;padding-bottom:16px;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;padding-bottom:16px;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;padding-bottom:16px;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;padding-bottom:16px;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;padding-bottom:16px;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;padding-bottom:16px;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">EXHIBIT 4.21</font></div><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><br><div></div><hr style="page-break-after:always"><a name="s23740dd8685748639d87caa6cf036e5f"></a><div><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><div style="line-height:120%;text-align:right;font-size:12pt;"><font style="font-family:Arial;font-size:12pt;">Exhibit 4.21</font></div></div><br><div style="line-height:120%;text-align:center;font-size:12pt;"><font style="font-family:Arial;font-size:12pt;font-weight:bold;">INSTRUMENT OF AMENDMENT TO THE</font></div><div style="line-height:120%;text-align:center;font-size:12pt;"><font style="font-family:Arial;font-size:12pt;font-weight:bold;">MDU RESOURCES GROUP, INC.</font></div><div style="line-height:120%;text-align:center;font-size:12pt;"><font style="font-family:Arial;font-size:12pt;font-weight:bold;">401(k) RETIREMENT PLAN</font></div><div style="line-height:120%;text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><div style="line-height:120%;text-align:justify;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><div style="line-height:120%;text-align:justify;font-size:12pt;"><font style="font-family:Arial;font-size:12pt;">The MDU Resources Group, Inc. 401(k) Retirement Plan (as amended and restated March&#160;1, 2011) (the &#8220;K-Plan&#8221;), is hereby further amended, effective July 14, 2014, unless otherwise indicated as follows:</font></div><div style="line-height:120%;text-align:justify;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman; font-size:10pt;"><tr><td style="width:48px;"></td><td></td></tr><tr><td style="vertical-align:top"><div style="line-height:120%;font-size:12pt;padding-left:0px;"><font style="font-family:Arial;font-size:12pt;">1.</font></div></td><td style="vertical-align:top;"><div style="line-height:120%;text-align:justify;font-size:12pt;"><font style="font-family:Arial;font-size:12pt;">By replacing Supplement D-7, </font><font style="font-family:Arial;font-size:12pt;text-decoration:underline;">Provisions Relating to the JTL Group, Inc. Retirement Contribution Feature</font><font style="font-family:Arial;font-size:12pt;">, in its entirety, with the following:</font></div></td></tr></table><div style="line-height:232%;text-align:center;padding-left:89px;font-size:12pt;"><font style="font-family:Arial;font-size:12pt;text-decoration:underline;">Supplement D-7</font></div><div style="line-height:120%;text-align:center;padding-left:89px;font-size:12pt;"><font style="font-family:Arial;font-size:12pt;"><br></font></div><div style="line-height:120%;text-align:center;padding-left:89px;font-size:12pt;"><font style="font-family:Arial;font-size:12pt;text-decoration:underline;">Provisions Relating to the</font></div><div style="line-height:120%;text-align:center;padding-left:89px;font-size:12pt;"><font style="font-family:Arial;font-size:12pt;text-decoration:underline;">JTL Group, Inc.</font></div><div style="line-height:120%;text-align:center;padding-left:89px;font-size:12pt;"><font style="font-family:Arial;font-size:12pt;text-decoration:underline;">Retirement Contribution Feature</font></div><div style="line-height:120%;text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman; font-size:10pt;"><tr><td style="width:137px;"></td><td></td></tr><tr><td style="vertical-align:top"><div style="line-height:120%;font-size:12pt;padding-left:89px;"><font style="font-family:Arial;font-size:12pt;">D-7-1</font></div></td><td style="vertical-align:top;"><div style="line-height:120%;text-align:justify;font-size:12pt;"><font style="font-family:Arial;font-size:12pt;text-decoration:underline;">Introduction.</font><font style="font-family:Arial;font-size:12pt;">&#32;Effective January 1, 2005, JTL Group, Inc. (&#8220;JTL&#8221;) a Participating Affiliate in the Plan hereby established the Retirement Contribution Feature as described in this Supplement D-7. This Retirement Contribution shall be in addition to all other contributions provided by JTL pursuant to the Plan. </font></div></td></tr></table><div style="line-height:120%;text-align:justify;padding-left:137px;text-indent:-48px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman; font-size:10pt;"><tr><td style="width:137px;"></td><td></td></tr><tr><td style="vertical-align:top"><div style="line-height:120%;font-size:12pt;padding-left:89px;"><font style="font-family:Arial;font-size:12pt;">D-7-2</font></div></td><td style="vertical-align:top;"><div style="line-height:120%;text-align:justify;font-size:12pt;"><font style="font-family:Arial;font-size:12pt;text-decoration:underline;">Eligibility to Share in the Retirement Contribution.</font><font style="font-family:Arial;font-size:12pt;">&#32;&#32;In order to share in the allocation of any Retirement Contribution made by JTL pursuant to Paragraph 3 below for a given Plan Year, Participants must be an Eligible Employee of JTL. Unless specifically bargained for, eligible Employees covered by a collective bargaining agreement shall not be eligible to share in this Retirement Contribution feature. Participants who meet the preceding requirements are referred to herein as &#8220;Supplement D-7 Participants.&#8221;</font></div></td></tr></table><div style="line-height:120%;text-align:justify;padding-left:137px;text-indent:-48px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman; font-size:10pt;"><tr><td style="width:137px;"></td><td></td></tr><tr><td style="vertical-align:top"><div style="line-height:120%;font-size:12pt;padding-left:89px;"><font style="font-family:Arial;font-size:12pt;">D-7-3</font></div></td><td style="vertical-align:top;"><div style="line-height:120%;text-align:justify;font-size:12pt;"><font style="font-family:Arial;font-size:12pt;text-decoration:underline;">Amount of Retirement Contribution Allocation.</font><font style="font-family:Arial;font-size:12pt;">&#32;For each Plan Year, JTL shall provide eligible hourly Participants $1.55 (effective April 1, 2014) per hour of service as a Retirement Contribution. The amount of any such contribution for a Plan Year will be allocated to Supplement D-7 hourly Participants for each hour of service for which the Participant receives compensation, excluding Hours of Service pursuant to a prevailing wage agreement. In addition, JTL will credit eligible salaried Participants with a contribution equal to eight percent (8%) of Compensation. The amount of any such contribution for a Plan Year shall be allocated to Supplement D-7 Participants based </font></div></td></tr></table><br><div><div style="line-height:120%;text-align:center;font-size:12pt;"><font style="font-family:Arial;font-size:12pt;">1</font></div></div><hr style="page-break-after:always"><a name="s23740dd8685748639d87caa6cf036e5f"></a><div></div><br><div style="line-height:120%;padding-left:137px;text-align:justify;"><font style="font-family:Arial;font-size:12pt;">upon their Compensation, excluding bonuses received while employed by the identified Participating Affiliate.</font></div><div style="line-height:120%;text-align:justify;padding-left:137px;text-indent:-48px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman; font-size:10pt;"><tr><td style="width:137px;"></td><td></td></tr><tr><td style="vertical-align:top"><div style="line-height:120%;font-size:12pt;padding-left:89px;"><font style="font-family:Arial;font-size:12pt;">D-7-4</font></div></td><td style="vertical-align:top;"><div style="line-height:120%;text-align:justify;font-size:12pt;"><font style="font-family:Arial;font-size:12pt;text-decoration:underline;">Vesting.</font><font style="font-family:Arial;font-size:12pt;">&#32;Notwithstanding anything in Section 4.2 to the contrary, Supplement D-7 Participants shall be vested in their Retirement Contribution only upon completing three (3) years of Vesting Service as defined below; provided, however that Supplement D-7 Participants who were employed by Star Aggregates, Inc. on August 31, 2007, shall be fully vested.  </font></div></td></tr></table><div style="line-height:120%;text-align:justify;padding-left:137px;text-indent:-48px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><div style="line-height:120%;padding-bottom:16px;text-align:justify;padding-left:137px;font-size:12pt;"><font style="font-family:Arial;font-size:12pt;">A &#8220;Year of Vesting Service&#8221; means a Plan Year in which the Supplement D&#8209;7 Participant is compensated for at least 1,000 Hours of Service. Service with a Supplement D-7 Company, the Company, and all Affiliates shall be recognized for purposes of this Paragraph, including, but not limited to, service that occurred prior to the effective date of Supplement D-7, applying these rules as if the Supplement D-7 Company (and its affiliates at that time) were Affiliates under the Plan. Notwithstanding the foregoing, a Participant shall be fully vested in his or her Retirement Contribution Account upon death, Disability, or upon attaining age 60. </font></div><table cellpadding="0" cellspacing="0" style="padding-bottom:16px;font-family:Times New Roman; font-size:10pt;"><tr><td style="width:137px;"></td><td></td></tr><tr><td style="vertical-align:top"><div style="line-height:120%;font-size:12pt;padding-left:89px;"><font style="font-family:Arial;font-size:12pt;">D-7-5</font></div></td><td style="vertical-align:top;"><div style="line-height:120%;text-align:justify;font-size:12pt;"><font style="font-family:Arial;font-size:12pt;text-decoration:underline;">Use of Terms</font><font style="font-family:Arial;font-size:12pt;">. Terms used in this Supplement D-7 shall, unless defined in this Supplement D-7 or elsewhere noted, have the meanings given to those terms in the Plan.</font></div></td></tr></table><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman; font-size:10pt;"><tr><td style="width:137px;"></td><td></td></tr><tr><td style="vertical-align:top"><div style="line-height:120%;font-size:12pt;padding-left:89px;"><font style="font-family:Arial;font-size:12pt;">D-7-6</font></div></td><td style="vertical-align:top;"><div style="line-height:120%;text-align:justify;font-size:12pt;"><font style="font-family:Arial;font-size:12pt;text-decoration:underline;">Inconsistencies with the Plan</font><font style="font-family:Arial;font-size:12pt;">. The terms of this Supplement D&#8209;7 are a part of the Plan and supersede the provisions of the Plan to the extent necessary to eliminate inconsistencies between the Plan and the Supplement D-7.</font></div></td></tr></table><div style="line-height:120%;text-align:justify;padding-left:137px;text-indent:-48px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><div style="line-height:120%;text-align:justify;font-size:12pt;"><font style="font-family:Arial;font-size:12pt;text-decoration:underline;">Explanation: Effective July 14, 2014, an amendment was approved to 1) allow Participating Affiliates the ability, under certain circumstances, to request and obtain approval to allow employees who participate in a multi-employer plan to participate in the K-Plan; 2) allow JTL Group, Inc. employees who participate in the Operating Engineers Local No. 800 &amp; The Wyoming Contractors&#8217; Association, Inc. Pension Trust Fund for Wyoming (JTL MEP employees) to participate in the JTL Retirement Contribution (Supplement D-7) and be granted past service credit for vesting purposes; and 3) allow JTL to participate in the Supplement G Prevailing Wage (Davis-Bacon) feature. This amendment rescinds JTL MEP employees&#8217; participation in the Retirement Contribution.</font></div><div style="line-height:120%;text-align:justify;text-indent:48px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><br><div><div style="line-height:120%;text-align:center;font-size:12pt;"><font style="font-family:Arial;font-size:12pt;">2</font></div></div><hr style="page-break-after:always"><a name="s23740dd8685748639d87caa6cf036e5f"></a><div></div><br><div style="line-height:120%;text-align:justify;text-indent:48px;font-size:12pt;"><font style="font-family:Arial;font-size:12pt;">IN WITNESS WHEREOF, MDU Resources Group, Inc., as Sponsoring Employer of the Plan, has caused this amendment to be duly executed by a member of the MDU Resources Group, Inc. Employee Benefits Committee (&#8220;Committee&#8221;) on this 18th day of August, 2014.</font></div><div style="line-height:120%;text-align:justify;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><div style="line-height:120%;text-align:center;text-indent:48px;font-size:12pt;"><font style="font-family:inherit;font-size:10pt;">&#160;&#160;&#160;&#160;</font><div style="padding-left:0px;text-indent:0px;line-height:normal;padding-top:10px;"><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman;font-size:10pt;margin-left:auto;margin-right:auto;width:573px;border-collapse:collapse;text-align:left;"><tr><td colspan="3"></td></tr><tr><td width="228px"></td><td width="33px"></td><td width="312px"></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td colspan="2" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:Arial;font-size:12pt;">MDU RESOURCES GROUP, INC.</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td colspan="2" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:Arial;font-size:12pt;">&#160;&#160;&#160;EMPLOYEE BENEFITS COMMITTEE<br></font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;height:18px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;height:18px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;height:18px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;height:18px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;height:18px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;height:18px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:Arial;font-size:12pt;">By:</font></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:Arial;font-size:12pt;">/s/ Doran N. Schwartz                            </font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:Arial;font-size:12pt;">Doran N. Schwartz, Chairman</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;height:21px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;height:21px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;height:21px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td></tr></table></div></div><div style="line-height:120%;text-align:justify;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><div style="line-height:120%;text-align:left;text-indent:288px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;</font></div><br><div><div style="line-height:120%;text-align:center;font-size:12pt;"><font style="font-family:Arial;font-size:12pt;">3</font></div></div>	</body>
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<TYPE>EX-5.1
<SEQUENCE>5
<FILENAME>exhibit51-pksopinion.htm
<DESCRIPTION>EXHIBIT
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		<title>Wdesk | Exhibit 5.1 - PKS Opinion</title>
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<a name="s1c69916b352446e99d43f463d8323974"></a><div style="line-height:120%;padding-bottom:16px;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;padding-bottom:16px;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;padding-bottom:16px;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;padding-bottom:16px;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;padding-bottom:16px;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;padding-bottom:16px;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;padding-bottom:16px;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;padding-bottom:16px;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;padding-bottom:16px;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;padding-bottom:16px;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;padding-bottom:16px;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;padding-bottom:16px;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">EXHIBIT 5.1</font></div><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><br><hr style="page-break-after:always"><a name="sB0E52C286E08E5D365A4EF8C5B848DEF"></a><div><div style="line-height:120%;padding-left:30px;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;text-align:right;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">Exhibit 5.1</font></div></div><br><div style="line-height:120%;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">[Letterhead of Paul K. Sandness]</font></div><div style="line-height:120%;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;text-align:left;text-indent:288px;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">&#160;&#160;&#160;&#160;</font></div><div style="line-height:120%;text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;text-align:left;text-indent:288px;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">August 25, 2014</font></div><div style="line-height:120%;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><div style="line-height:120%;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><div style="line-height:120%;font-size:12pt;"><div style="padding-left:0px;text-indent:0px;line-height:normal;padding-top:10px;"><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman;font-size:10pt;width:50%;border-collapse:collapse;text-align:left;"><tr><td colspan="1"></td></tr><tr><td width="100%"></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">MDU Resources Group, Inc.</font></div><div style="font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">1200 W. Century Avenue </font></div><div style="font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">P.O. Box 5650</font></div><div style="font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">Bismarck, North Dakota 58506-5650</font></div></td></tr></table></div></div><div style="line-height:120%;text-align:left;padding-left:144px;text-indent:-48px;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">Ladies and Gentlemen:</font></div><div style="line-height:120%;text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;text-align:justify;text-indent:48px;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">I am General Counsel and Secretary of MDU Resources Group, Inc., a Delaware corporation&#160;(the &#8220;Company&#8221;). This opinion is being furnished in connection with the registration statement on Form S-8 (the &#8220;Registration Statement&#8221;) to be filed on or about the date hereof with the Securities and Exchange Commission (the &#8220;Commission&#8221;) by the Company under the Securities&#160;Act of 1933, as amended (the &#8220;Securities Act&#8221;), for the registration of 3,500,000 shares&#160;(the &#8220;Shares&#8221;) of the Company&#8217;s common stock, par value $1.00 per share, for offer and sale&#160;pursuant to the MDU Resources Group, Inc. 401(k) Retirement Plan (the &#8220;Plan&#8221;).</font></div><div style="line-height:120%;text-align:justify;text-indent:48px;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;text-align:justify;text-indent:48px;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">For purposes of this opinion, I have examined such instruments, certificates, records and documents, and such matters of law, as I have considered necessary or appropriate for the purposes&#160;hereof.</font></div><div style="line-height:120%;text-align:justify;text-indent:48px;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;text-align:justify;text-indent:48px;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">Based upon and subject to the foregoing, and subject to the further limitations and qualifications expressed below, I am of the opinion that: </font></div><div style="line-height:120%;text-align:justify;text-indent:48px;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman; font-size:10pt;"><tr><td style="width:96px;"></td><td></td></tr><tr><td style="vertical-align:top"><div style="line-height:120%;font-size:12pt;padding-left:48px;"><font style="font-family:inherit;font-size:12pt;">1.</font></div></td><td style="vertical-align:top;"><div style="line-height:120%;text-align:justify;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">The issuance and sale of original issuance Shares in the manner contemplated by the Plan has been duly authorized by the Board of Directors of the Company.</font></div></td></tr></table><div style="line-height:120%;text-align:justify;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman; font-size:10pt;"><tr><td style="width:96px;"></td><td></td></tr><tr><td style="vertical-align:top"><div style="line-height:120%;font-size:12pt;padding-left:48px;"><font style="font-family:inherit;font-size:12pt;">2.</font></div></td><td style="vertical-align:top;"><div style="line-height:120%;text-align:justify;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">When the original issuance Shares shall have been issued, sold and delivered (i) in compliance with the authority contained in the regulatory consents and approvals of&#160;the&#160;Federal Energy Regulatory Commission, the Montana Public Service Commission&#160;and the Wyoming Public&#160;Service Commission and (ii) in accordance with the terms and provisions of the Plan and for the consideration contemplated thereby, such original issuance Shares will be validly issued, fully paid and non-assessable.</font></div></td></tr></table><br><div></div><hr style="page-break-after:always"><a name="sB0E52C286E08E5D365A4EF8C5B848DEF"></a><div></div><br><div style="line-height:120%;text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">MDU Resources Group, Inc.</font></div><div style="line-height:120%;text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">August 25, 2014</font></div><div style="line-height:120%;text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">Page 2</font></div><div style="line-height:120%;text-align:justify;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;text-align:justify;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;text-align:justify;text-indent:48px;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">My opinions expressed above are limited to the General Corporation Law of the State of Delaware, except to the extent such opinions involve determinations regarding regulatory consents&#160;and approvals required to be obtained by the Company from any state or federal governmental body or bodies in connection with the issuance and sale of the original issuance Shares.  As to matters of the General Corporation Law of the State of Delaware, I have relied on the opinion of Duane Morris LLP, counsel to the Company, dated August 25, 2014, which opinion&#160;is&#160;to be filed as an exhibit to the Registration Statement.</font></div><div style="line-height:120%;text-align:left;text-indent:48px;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;padding-bottom:12px;text-align:justify;text-indent:48px;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">I hereby consent to the filing of this opinion as an exhibit to the Registration Statement and&#160;to the references to me contained under the heading &#8220;Interests of Named Experts and Counsel&#8221;&#160;in&#160;the Registration Statement and any amendments thereto. In giving such consent, I do not thereby concede that I am within the category of persons whose consent is required under Section&#160;7 of the Securities Act or the rules and regulations of the Commission thereunder.</font></div><div style="line-height:120%;text-align:justify;padding-left:288px;text-indent:48px;font-size:12pt;"><font style="font-family:inherit;font-size:10pt;">&#160;&#160;&#160;&#160;</font><div style="padding-left:0px;text-indent:0px;line-height:normal;padding-top:10px;"><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman;font-size:10pt;width:240px;border-collapse:collapse;text-align:left;"><tr><td colspan="1"></td></tr><tr><td width="240px"></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">Very truly yours,</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">/s/ Paul K. Sandness</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;height:21px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td></tr><tr><td style="vertical-align:middle;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">Paul K. Sandness</font></div></td></tr><tr><td style="vertical-align:middle;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">General Counsel and Secretary</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div></td></tr></table></div></div><div style="line-height:120%;text-align:justify;text-indent:48px;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;text-align:left;padding-left:384px;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;text-align:right;text-indent:48px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div><div style="line-height:120%;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><br><div><div style="line-height:120%;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">2</font></div></div>	</body>
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<TYPE>EX-5.2
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<FILENAME>exhibit52-dmopinion.htm
<DESCRIPTION>EXHIBIT
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		<title>Wdesk | Exhibit 5.2 - DM Opinion</title>
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<a name="sbad5c1d22c04491e8cad6f467b2e9590"></a><div></div><br><div style="line-height:120%;padding-bottom:16px;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;padding-bottom:16px;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;padding-bottom:16px;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;padding-bottom:16px;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;padding-bottom:16px;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;padding-bottom:16px;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;padding-bottom:16px;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;padding-bottom:16px;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;padding-bottom:16px;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;padding-bottom:16px;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;padding-bottom:16px;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;padding-bottom:16px;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">EXHIBIT 5.2</font></div><div style="line-height:120%;padding-bottom:16px;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;padding-bottom:16px;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><br><div><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div></div><hr style="page-break-after:always"><a name="s9d71e1cd2e494377b4206dc13c8bb47e"></a><div><div style="line-height:120%;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;text-align:right;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">Exhibit 5.2</font></div><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div></div><br><div style="line-height:120%;padding-bottom:24px;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;padding-bottom:24px;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;padding-bottom:24px;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">[Letterhead of Duane Morris LLP]</font></div><div style="line-height:120%;padding-bottom:24px;text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;padding-bottom:24px;text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">August 25, 2014</font></div><div style="line-height:120%;padding-bottom:24px;text-align:left;font-size:12pt;"><div style="padding-left:0px;text-indent:0px;line-height:normal;padding-top:10px;"><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman;font-size:10pt;width:64.52991452991454%;border-collapse:collapse;text-align:left;"><tr><td colspan="1"></td></tr><tr><td width="100%"></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">MDU Resources Group, Inc.</font></div><div style="font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">1200 West Century Avenue, P.O. Box 5650</font></div><div style="font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">Bismarck, North Dakota  58506-5650</font></div></td></tr></table></div></div><div style="line-height:120%;padding-bottom:16px;padding-top:8px;text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">Ladies and Gentlemen:</font></div><div style="line-height:120%;padding-bottom:16px;text-align:left;text-indent:48px;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">We are acting as counsel to MDU Resources Group, Inc., a Delaware corporation (the &#8220;Company&#8221;), in connection with the preparation and filing with the Securities and Exchange Commission (the &#8220;Commission&#8221;) under the Securities Act of 1933, as amended (the &#8220;Securities Act&#8221;), of the Company&#8217;s registration statement on Form S-8 (the &#8220;Registration Statement&#8221;) for the registration of 3,500,000 shares (the &#8220;Shares&#8221;) of common stock, par value $1.00 per share, of the Company to be issued and sold pursuant to the Company&#8217;s 401(k) Retirement Plan (the &#8220;Plan&#8221;).</font></div><div style="line-height:120%;padding-bottom:16px;text-align:left;text-indent:48px;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">For purposes of this opinion, we have examined such instruments, certificates, records and documents, and such matters of law, as we have considered necessary or appropriate for the purposes hereof.</font></div><div style="line-height:120%;padding-bottom:16px;text-align:left;text-indent:48px;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">Based upon and subject to the foregoing, and subject to the further limitations and qualifications expressed below, we are of the opinion that: </font></div><div style="line-height:120%;padding-bottom:16px;text-align:left;text-indent:48px;font-size:12pt;"><font style="font-family:inherit;font-size:10pt;"></font><font style="font-family:inherit;font-size:12pt;">1.  The issuance and sale of original issuance Shares in the manner contemplated by the Plan has been duly authorized by the Board of Directors of the Company.</font></div><div style="line-height:120%;text-align:left;text-indent:48px;font-size:12pt;"><font style="font-family:inherit;font-size:10pt;"></font><font style="font-family:inherit;font-size:12pt;">2.  When the original issuance Shares shall have been issued, sold and delivered in accordance with the terms and provisions of the Plan and for the consideration contemplated thereby, such original issuance Shares will be validly issued, fully paid and non-assessable.</font></div><div style="line-height:120%;padding-bottom:8px;padding-top:16px;text-align:left;text-indent:48px;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">For purposes of the opinion expressed in paragraph 2 above, we have assumed that (i) the Company has or will have obtained such state or federal regulatory consents and approvals as may be necessary to authorize the issuance and sale of the original issuance Shares pursuant to the Plan, including, but not limited to, regulatory consents and approvals from the Federal</font></div><div style="line-height:120%;padding-bottom:8px;padding-top:16px;text-align:left;text-indent:48px;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><br><div></div><hr style="page-break-after:always"><a name="s9d71e1cd2e494377b4206dc13c8bb47e"></a><div><div style="line-height:120%;text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">MDU Resources Group, Inc.</font></div><div style="line-height:120%;text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">August 25, 2014</font></div><div style="line-height:120%;text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">Page 2</font></div><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div></div><br><div style="line-height:120%;padding-bottom:8px;padding-top:16px;text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">Energy Regulatory Commission, the Montana Public Service Commission and the Wyoming Public Service Commission, and (ii) such original issuance Shares will be issued, sold and delivered in compliance with the authority contained in such regulatory consents and approvals.</font></div><div style="line-height:120%;text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;text-align:left;text-indent:48px;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">Our opinions expressed above are limited to the General Corporation Law of the State of Delaware.</font></div><div style="line-height:120%;text-align:left;text-indent:48px;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;text-align:left;text-indent:48px;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">We hereby consent to the filing of this opinion as an exhibit to the Registration Statement and to the references to our firm contained under the heading &#8220;Interests of Named Experts and Counsel&#8221; in the Registration Statement and any amendments thereto. In giving such consent, we do not thereby concede that we are within the category of persons whose consent is required under Section 7 of the Securities Act or the rules and regulations of the Commission thereunder.</font></div><div style="line-height:120%;text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;text-align:center;text-indent:48px;font-size:12pt;"><div style="padding-left:0px;text-indent:0px;line-height:normal;padding-top:10px;"><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman;font-size:10pt;margin-left:auto;margin-right:auto;width:531px;border-collapse:collapse;text-align:left;"><tr><td colspan="2"></td></tr><tr><td width="264px"></td><td width="266px"></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">Very truly yours,</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;height:30px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;height:30px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">/s/ Duane Morris LLP</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;height:21px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;height:21px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;height:17px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;height:17px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;height:18px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;height:18px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td></tr></table></div></div><div style="line-height:120%;text-align:justify;text-indent:48px;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;text-align:left;padding-left:384px;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;text-align:right;text-indent:48px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><br><div><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div></div>	</body>
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<TYPE>EX-23.1
<SEQUENCE>7
<FILENAME>exhibit231-dtconsent.htm
<DESCRIPTION>EXHIBIT
<TEXT>
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		<title>Wdesk | Exhibit 23.1 D&T Consent</title>
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<a name="s44185dcbf5a945f68246218918d93522"></a><div></div><br><div style="line-height:120%;padding-bottom:16px;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;padding-bottom:16px;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;padding-bottom:16px;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;padding-bottom:16px;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;padding-bottom:16px;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;padding-bottom:16px;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;padding-bottom:16px;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;padding-bottom:16px;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;padding-bottom:16px;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;padding-bottom:16px;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;padding-bottom:16px;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;padding-bottom:16px;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">EXHIBIT 23.1</font></div><br><div></div><hr style="page-break-after:always"><a name="s44185dcbf5a945f68246218918d93522"></a><div><div style="line-height:120%;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;text-align:right;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">Exhibit 23.1</font></div></div><br><div style="line-height:120%;padding-bottom:8px;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;padding-bottom:8px;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">[Letterhead of Deloitte &amp; Touche LLP]</font></div><div style="line-height:120%;padding-bottom:8px;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;padding-bottom:8px;text-align:center;font-size:12pt;"><font style="font-family:Arial;font-size:12pt;"><br></font></div><div style="line-height:120%;text-align:left;font-size:12pt;"><font style="font-family:Arial;font-size:12pt;"><br></font></div><div style="line-height:120%;text-align:left;font-size:12pt;"><font style="font-family:Arial;font-size:12pt;font-weight:bold;">CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM</font></div><div style="line-height:120%;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">We consent to the incorporation by reference in this Registration Statement on Form S-8 of our reports dated February 21, 2014 relating to the consolidated financial statements and financial statement schedules of MDU Resources Group, Inc. and subsidiaries, and the effectiveness of MDU Resources Group, Inc. and subsidiaries' internal control over financial reporting appearing in the Annual Report&#160;on Form 10-K of MDU Resources Group, Inc. for the year ended December 31, 2013, and to the reference to us under the heading &#8220;Interests of Named Experts and Counsel&#8221; in this Registration Statement.</font></div><div style="line-height:120%;padding-bottom:8px;padding-top:8px;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><div style="line-height:120%;padding-top:8px;text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">/s/ Deloitte &amp; Touche LLP</font></div><div style="line-height:120%;padding-top:8px;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><div style="line-height:120%;padding-top:16px;text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">Minneapolis, Minnesota</font></div><div style="line-height:120%;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">August 25, 2014</font></div><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><br><div></div>	</body>
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<DOCUMENT>
<TYPE>EX-23.2
<SEQUENCE>8
<FILENAME>exhibit232-consent.htm
<DESCRIPTION>EXHIBIT
<TEXT>
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		<title>Wdesk | Exhibit 23.2 - Consent of Indendent Firm</title>
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<a name="s46c94e94279449edaa581bf331dfee59"></a><div></div><br><div style="line-height:120%;padding-bottom:16px;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;padding-bottom:16px;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;padding-bottom:16px;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;padding-bottom:16px;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;padding-bottom:16px;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;padding-bottom:16px;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;padding-bottom:16px;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;padding-bottom:16px;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;padding-bottom:16px;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;padding-bottom:16px;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;padding-bottom:16px;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">EXHIBIT 23.2</font></div><br><div></div><hr style="page-break-after:always"><a name="s46c94e94279449edaa581bf331dfee59"></a><div><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><div style="line-height:120%;text-align:right;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">Exhibit 23.2</font></div></div><br><div style="line-height:120%;padding-bottom:16px;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;padding-bottom:16px;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">[Letterhead of Baker Tilly Virchow Krause, LLP]</font></div><div style="line-height:120%;padding-bottom:16px;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;padding-bottom:16px;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;font-weight:bold;">CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM</font></div><div style="line-height:120%;text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;text-align:left;text-indent:48px;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">We consent to the incorporation by reference in this Registration Statement of MDU Resources Group, Inc. on Form S-8 of (i) our report dated June 18, 2014 relating to the statements of net assets available for benefits of MDU Resources Group, Inc. 401(k) Retirement Plan as of December 31, 2013 and 2012 and the related statement of changes in net assets available for benefits for the year ended December 31, 2013, appearing in the Annual Report on Form 11-K of the MDU Resources Group, Inc. 401(k) Retirement Plan for the year ended December 31, 2013 and (ii) to the reference to us under the heading &#8220;Interests of Named Experts and Counsel&#8221; in this Registration Statement.</font></div><div style="line-height:120%;padding-bottom:8px;padding-top:8px;text-align:left;text-indent:48px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><div style="line-height:120%;padding-top:8px;text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">/s/ Baker Tilly Virchow Krause, LLP</font></div><div style="line-height:120%;padding-top:8px;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><div style="line-height:120%;padding-top:8px;text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">Minneapolis, Minnesota</font></div><div style="line-height:120%;text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">August 25, 2014</font></div><div style="line-height:120%;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><br><div></div>	</body>
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