EDGAR Filing Documents for 0000067716-10-000047

Form 10-Q - Quarterly report [Sections 13 or 15(d)]:

SEC Accession No. 0000067716-10-000047

Filing Date

2010-05-05

Accepted

2010-05-05 09:33:52

Documents

Period of Report

2010-03-31

Document Format Files

Seq	Description	Document	Type	Size
1	MDU RESOURCES GROUP, INC. 1ST QUARTER 2010 FORM 10-Q	mduform10-q.htm	10-Q	1532284
2	CERTIFICATE OF AMENDMENT, DATED 04/27/2010, OF RESTATED CERTIFICATE OF INCORPORA	exhibit3.htm	EX-3	58868
3	INSTRUMENT OF AMENDMENT TO THE MDU RESOURCES GROUP, INC. 401(K) RETIREMENT PLAN,	exhibit10a.htm	EX-10.A	41143
4	INSTRUMENT OF AMENDMENT TO THE MDU RESOURCES GROUP, INC. 401(K) RETIREMENT PLAN,	exhibit10b.htm	EX-10.B	51404
5	COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES AND COMBINED FIXED CHARGES AND	exhibit12.htm	EX-12	54926
6	CERTIFICATION OF CHIEF EXECUTIVE OFFICER FILED PURSUANT TO SECTION 302 OF THE SA	exhibit31a.htm	EX-31.A	13311
7	CERTIFICATION OF CHIEF FINANCIAL OFFICER FILED PURSUANT TO SECTION 302 OF THE SA	exhibit31b.htm	EX-31.B	13697
8	CERTIFICATION OF CEO AND CFO FURNISHED PURSUANT TO 18 USC SECTION 1350, AS ADOPT	exhibit32.htm	EX-32	7823
	Complete submission text file	0000067716-10-000047.txt		4510255

Data Files

Seq	Description	Document	Type	Size
9	INSTANCE DOCUMENT	mdu-20100331.xml	EX-101.INS	755253
10	SCHEMA DOCUMENT	mdu-20100331.xsd	EX-101.SCH	24283
11	CALCULATION LINKBASE DOCUMENT	mdu-20100331_cal.xml	EX-101.CAL	49936
12	LABEL LINKBASE DOCUMENT	mdu-20100331_lab.xml	EX-101.LAB	201979
13	PRESENTATION LINKBASE DOCUMENT	mdu-20100331_pre.xml	EX-101.PRE	116635

Mailing Address 1200 WEST CENTURY AVENUE BISMARCK ND 58506-5650

Business Address 1200 WEST CENTURY AVENUE BISMARCK ND 58506-5650 701-530-1059

MDU RESOURCES GROUP INC (Filer) CIK: 0000067716 (see all company filings)