<SEC-DOCUMENT>0000067716-17-000031-index.html : 20170324
<SEC-HEADER>0000067716-17-000031.hdr.sgml : 20170324
<ACCEPTANCE-DATETIME>20170324111416
ACCESSION NUMBER:		0000067716-17-000031
CONFORMED SUBMISSION TYPE:	DEFA14A
PUBLIC DOCUMENT COUNT:		6
FILED AS OF DATE:		20170324
DATE AS OF CHANGE:		20170324
EFFECTIVENESS DATE:		20170324

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:		DEFA14A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-03480
		FILM NUMBER:		17711626

	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>DEFA14A
<SEQUENCE>1
<FILENAME>a2017proxynotice.htm
<DESCRIPTION>DEFA14A
<TEXT>
Document 1 - file: a2017proxynotice.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>2
<FILENAME>image-envelopea02.jpg
<TEXT>
Document 2 - file: image-envelopea02.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>3
<FILENAME>image-mdurlogoa02.jpg
<TEXT>
Document 3 - file: image-mdurlogoa02.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>4
<FILENAME>image-telephonea02.jpg
<TEXT>
Document 4 - file: image-telephonea02.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>5
<FILENAME>image_computera02.jpg
<TEXT>
Document 5 - file: image_computera02.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>6
<FILENAME>stickfigure.jpg
<TEXT>
Document 6 - file: stickfigure.jpg

</DOCUMENT>
</SEC-DOCUMENT>