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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
18
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)

IRS No.: 410423660 | State of Incorp.: DE | Fiscal Year End: 1231
Type: 10-K | Act: 34 | File No.: 001-03480 | Film No.: 11630726
SIC: 1400 Mining & Quarrying of Nonmetallic Minerals (No Fuels)
Assistant Director 9