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Filing Detail
Form 10-Q - Quarterly report [Sections 13 or 15(d)]:
SEC Accession No. 0000067716-12-000049
Filing Date
2012-05-04
Accepted
2012-05-04 10:00:11
Documents
13
Period of Report
2012-03-31

Document Format Files

Seq Description Document Type Size
1 MDU RESOURCES GROUP, INC. 1ST QUARTER FORM 10-Q mdu-3312012_10q.htm 10-Q 1239629
2 MDUR EXECUTIVE INCENTIVE COMPENSATION PLAN, AS AMENDED 3/1/12, AND RULES & REGUL mdu-3312012_ex10a.htm EX-10.A 94838
3 COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES AND COMBINED FIXED CHARGES AND mdu-3312012_ex12.htm EX-12 36846
4 CERTIFICATION OF CEO - SEC 302 SOX ACT 2002 mdu-3312012_ex31a.htm EX-31.A 10474
5 CERTIFICATION OF CFO - SEC 302 SOX ACT 2002 mdu-3312012_ex31b.htm EX-31.B 9613
6 CERTIFICATION OF CEO AND CFO - 18 USC SEC 1350 - SEC 906 SOX ACT 2002 mdu-3312012_ex32.htm EX-32 7198
7 MINE SAFETY DISCLOSURES mdu-3312012_ex95.htm EX-95 138343
  Complete submission text file 0000067716-12-000049.txt   8409009

Data Files

Seq Description Document Type Size
8 XBRL INSTANCE DOCUMENT mdu-20120331.xml EX-101.INS 1469321
9 XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT mdu-20120331.xsd EX-101.SCH 53693
10 XBRL TAXONOMY EXTENSION CALCULATION LINKBASE DOCUMENT mdu-20120331_cal.xml EX-101.CAL 73998
11 XBRL TAXONOMY EXTENSION LABEL LINKBASE DOCUMENT mdu-20120331_lab.xml EX-101.LAB 637193
12 XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE DOCUMENT mdu-20120331_pre.xml EX-101.PRE 307370
13 XBRL TAXONOMY EXTENSION DEFINITION LINKBASE DOCUMENT mdu-20120331_def.xml EX-101.DEF 224637
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)

IRS No.: 410423660 | State of Incorp.: DE | Fiscal Year End: 1231
Type: 10-Q | Act: 34 | File No.: 001-03480 | Film No.: 12812217
SIC: 1400 Mining & Quarrying of Nonmetallic Minerals (No Fuels)