EDGAR Filing Documents for 0000067716-12-000071

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

SEC Accession No. 0000067716-12-000071

Filing Date

2012-08-07

Accepted

2012-08-07 11:38:18

Documents

Period of Report

2012-06-30

Document Format Files

Seq	Description	Document	Type	Size
1	MDU RESOURCES GROUP, INC. 2ND QUARTER 2012 FORM 10-Q	mduform10q.htm	10-Q	1537595
2	CEHI CREDIT AGREEMENT DATED 6/8/12	exhibit4.htm	EX-4	1139713
3	MDUR NON-EMPLOYEE DIRECTOR LONG-TERM INCENTIVE COMP PLAN, AMENDED 5/17/12	exhibit10a.htm	EX-10.A	67325
4	INSTRUMENT OF AMENDMENT TO THE MDUR 401(K) RETIREMENT PLAN, 5/24/12	exhibit10b.htm	EX-10.B	98663
5	COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES AND COMBINED FIXED CHARGES AND	exhibit12.htm	EX-12	36838
6	CERTIFICATION OF CEO - SEC 302 SOX ACT 2002	exhibit31a.htm	EX-31.A	10470
7	CERTIFICATION OF CFO - SEC 302 SOX ACT 2002	exhibit31b.htm	EX-31.B	9609
8	CERTIFICATION OF CEO AND CFO - 18 USC SEC 1350 - SEC 906 SOX ACT 2002	exhibit32.htm	EX-32	7095
9	MINE SAFETY DISCLOSURES	exhibit95.htm	EX-95	113843
	Complete submission text file	0000067716-12-000071.txt		10538680

Data Files

Seq	Description	Document	Type	Size
10	XBRL INSTANCE DOCUMENT	mdu-20120630.xml	EX-101.INS	1681731
11	XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT	mdu-20120630.xsd	EX-101.SCH	54713
12	XBRL TAXONOMY EXTENSION CALCULATION LINKBASE DOCUMENT	mdu-20120630_cal.xml	EX-101.CAL	82285
13	XBRL TAXONOMY EXTENSION LABEL LINKBASE DOCUMENT	mdu-20120630_lab.xml	EX-101.LAB	649336
14	XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE DOCUMENT	mdu-20120630_pre.xml	EX-101.PRE	313011
15	XBRL TAXONOMY EXTENSION DEFINITION LINKBASE DOCUMENT	mdu-20120630_def.xml	EX-101.DEF	228721

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)