EDGAR Filing Documents for 0000067716-11-000021

Form 10-K - Annual report [Section 13 and 15(d), not S-K Item 405]:

SEC Accession No. 0000067716-11-000021

Filing Date

2011-02-23

Accepted

2011-02-23 09:47:25

Documents

Period of Report

2010-12-31

Document Format Files

Seq	Description	Document	Type	Size
1	MDU RESOURCES GROUP, INC. FORM 10-K FOR PERIOD ENDED 12/31/2010	mduform10-k2010.htm	10-K	5116724
2	COMPANY BYLAWS	exhibit3b.htm	EX-3.B	171511
3	MDUR EXECUTIVE OFFICERS WITH CHANGE OF CONTROL EMPLOYMENT AGREEMENTS 12/31/10	exhibit10n.htm	EX-10.N	17224
4	INSTRUMENT OF AMENDMENT TO MDUR 401(K) RETIREMENT PLAN 12/29/10	exhibit10ae.htm	EX-10.AE	22579
5	COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES AND COMBINED FIXED CHARGES AND	exhibit12.htm	EX-12	105799
6	SUBSIDIARIES OF MDU RESOURCES GROUP, INC.	exhibit21.htm	EX-21	55070
7	CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM	exhibit23a.htm	EX-23.A	4021
8	CONSENT OF RYDER SCOTT COMPANY, L.P.	exhibit23b.htm	EX-23.B	4956
9	CERTIFICATION OF CEO - SEC 302 SOX ACT 2002	exhibit31a.htm	EX-31.A	12150
10	CERTIFICATION OF CFO - SEC 302 SOX ACT 2002	exhibit31b.htm	EX-31.B	13568
11	CERTIFICATION OF CEO AND CFO - 18 USC SEC 1350 - SEC 906 SOX ACT 2002	exhibit32.htm	EX-32	7723
12	RYDER SCOTT COMPANY, L.P. REPORT DATED 1/13/11	exhibit99b.htm	EX-99.B	161808
	Complete submission text file	0000067716-11-000021.txt		15263727

Data Files

Seq	Description	Document	Type	Size
13	INSTANCE DOCUMENT	mdu-20101231.xml	EX-101.INS	2557976
14	SCHEMA DOCUMENT	mdu-20101231.xsd	EX-101.SCH	20837
15	CALCULATION LINKBASE DOCUMENT	mdu-20101231_cal.xml	EX-101.CAL	61956
16	LABEL LINKBASE DOCUMENT	mdu-20101231_lab.xml	EX-101.LAB	241626
17	PRESENTATION LINKBASE DOCUMENT	mdu-20101231_pre.xml	EX-101.PRE	135451
18	DEFINITION LINKBASE DOCUMENT	mdu-20101231_def.xml	EX-101.DEF	15337

Mailing Address 1200 WEST CENTURY AVENUE BISMARCK ND 58503

Business Address 1200 WEST CENTURY AVENUE BISMARCK ND 58503 701-530-1059

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