Form 10-Q - Quarterly report [Sections 13 or 15(d)]:
SEC Accession No. 0000067716-11-000040
Filing Date
2011-05-05
Accepted
2011-05-05 10:37:49
Documents
12
Period of Report
2011-03-31

Document Format Files

Seq Description Document Type Size
1 MDU RESOURCES GROUP, INC. 1ST QUARTER 2011 FORM 10-Q mduform10-q.htm 10-Q 1792105
2 LONG-TERM PERFORMANCE-BASED INCENTIVE PLAN 2/17/11 exhibit10a.htm EX-10.A 135634
3 INSTRUMENT OF AMENDMENT TO THE MDUR 401(K) RETIREMENT PLAN 3/29/11 exhibit10b.htm EX-10.B 68015
4 COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES AND COMBINED FIXED CHARGES AND exhibit12.htm EX-12 46891
5 CERTIFICATION OF CEO - SEC 302 SOX ACT 2002 exhibit31a.htm EX-31.A 12296
6 CERTIFICATION OF CFO - SEC 302 SOX ACT 2002 exhibit31b.htm EX-31.B 13567
7 CERTIFICATION OF CEO AND CFO - 18 USC SEC 1350 - SEC 906 SOX ACT 2002 exhibit32.htm EX-32 7779
  Complete submission text file 0000067716-11-000040.txt   5495542

Data Files

Seq Description Document Type Size
8 INSTANCE DOCUMENT mdu-20110331.xml EX-101.INS 715901
9 SCHEMA DOCUMENT mdu-20110331.xsd EX-101.SCH 23852
10 CALCULATION LINKBASE DOCUMENT mdu-20110331_cal.xml EX-101.CAL 61282
11 LABEL LINKBASE DOCUMENT mdu-20110331_lab.xml EX-101.LAB 237339
12 PRESENTATION LINKBASE DOCUMENT mdu-20110331_pre.xml EX-101.PRE 114759
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)

EIN.: 410423660 | State of Incorp.: DE | Fiscal Year End: 1231
Type: 10-Q | Act: 34 | File No.: 001-03480 | Film No.: 11813049
SIC: 1400 Mining & Quarrying of Nonmetallic Minerals (No Fuels)