<SEC-DOCUMENT>0000067716-16-000164-index.html : 20160721
<SEC-HEADER>0000067716-16-000164.hdr.sgml : 20160721
<ACCEPTANCE-DATETIME>20160720175952
ACCESSION NUMBER:		0000067716-16-000164
CONFORMED SUBMISSION TYPE:	8-K/A
PUBLIC DOCUMENT COUNT:		5
CONFORMED PERIOD OF REPORT:	20160624
ITEM INFORMATION:		Financial Statements and Exhibits
FILED AS OF DATE:		20160721
DATE AS OF CHANGE:		20160720

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:		8-K/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-03480
		FILM NUMBER:		161776202

	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>8-K/A
<SEQUENCE>1
<FILENAME>a8-kadpr.htm
<DESCRIPTION>8-K/A
<TEXT>
Document 1 - file: a8-kadpr.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-2.1
<SEQUENCE>2
<FILENAME>exhibit21mipa-dpr.htm
<DESCRIPTION>EXHIBIT 2.1
<TEXT>
Document 2 - file: exhibit21mipa-dpr.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-2.2
<SEQUENCE>3
<FILENAME>exhibit22calumetpsa.htm
<DESCRIPTION>EXHIBIT 2.2
<TEXT>
Document 3 - file: exhibit22calumetpsa.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-2.3
<SEQUENCE>4
<FILENAME>exhibit23calumetpsaamendme.htm
<DESCRIPTION>EXHIBIT 2.3
<TEXT>
Document 4 - file: exhibit23calumetpsaamendme.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.1
<SEQUENCE>5
<FILENAME>a2016q2ex99-dpr.htm
<DESCRIPTION>EXHIBIT 99.1
<TEXT>
Document 5 - file: a2016q2ex99-dpr.htm

</DOCUMENT>
</SEC-DOCUMENT>