Form 10-K - Annual report [Section 13 and 15(d), not S-K Item 405]:
SEC Accession No. 0000067716-12-000031
Filing Date
2012-02-24
Accepted
2012-02-24 10:12:39
Documents
24
Period of Report
2011-12-31

Document Format Files

Seq Description Document Type Size
1 MDU RESOURCES GROUP, INC. 2011 FORM 10-K mdu123111-10k.htm 10-K 4746519
2 COMPANY BYLAWS mdu123111-ex3b.htm EX-3.B 164382
3 MDUR CREDIT AGREEMENT, DATED 05/26/2011 mdu123111-ex4e.htm EX-4.E 680330
4 LONG-TERM PERFORMANCE-BASED INCENTIVE PLAN, AS AMENDED 11/17/2011 mdu123111-ex10h.htm EX-10.H 100181
5 MDUR SECTION 16 OFFICERS AND DIRECTORS WITH INDEMNIFICATION CHART, AS OF 12/31/2 mdu123111-ex10u.htm EX-10.U 29027
6 EMPLOYMENT LETTER FOR J KENT WELLS, DATED 03/09/2011 mdu123111-ex10v.htm EX-10.V 85572
7 MDUR LONG-TERM PERFORMANCE-BASED INCENTIVE PLAN 2011 FIDELITY PRESIDENT AND CEO mdu123111-ex10w.htm EX-10.W 27639
8 MDUR NONQUALIFIED DEFINED CONTRIBUTION PLAN, AS ADOPTED 11/17/2011 mdu123111-ex10x.htm EX-10.X 73190
9 INSTRUMENT OF AMENDMENT TO THE MDUR 401(K) RETIREMENT PLAN, DATED 12/29/2011 mdu123111-ex10ac.htm EX-10.AC 41087
10 COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES & COMBINED FIXED CHARGES & PRE mdu123111-ex12.htm EX-12 101109
11 SUBSIDIARIES OF MDU RESOURCES GROUP, INC. mdu123111-ex21.htm EX-21 46773
12 CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM mdu123111-ex23a.htm EX-23.A 3737
13 CONSENT OF RYDER SCOTT COMPANY, L.P. mdu123111-ex23b.htm EX-23.B 11161
14 CERTIFICATION OF CEO - SEC 302 SOX ACT 2002 mdu123111-ex31a.htm EX-31.A 11054
15 CERTIFICATION OF CFO - SEC 302 SOX ACT 2002 mdu123111-ex31b.htm EX-31.B 11027
16 CERTIFICATION OF CEO AND CFO - 18 USC SEC 1350 - SEC 906 SOX ACT 2002 mdu123111-ex32.htm EX-32 7453
17 MINE SAFETY DISCLOSURES mdu123111-ex95.htm EX-95 271503
18 RYDER SCOTT COMPANY, L.P. REPORT mdu123111-ex99.htm EX-99 163292
  Complete submission text file 0000067716-12-000031.txt   34020192

Data Files

Seq Description Document Type Size
19 XBRL INSTANCE DOCUMENT mdu-20111231.xml EX-101.INS 6433578
20 XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT mdu-20111231.xsd EX-101.SCH 126085
21 XBRL TAXONOMY EXTENSION CALCULATION LINKBASE DOCUMENT mdu-20111231_cal.xml EX-101.CAL 171812
22 XBRL TAXONOMY EXTENSION DEFINITION LINKBASE DOCUMENT mdu-20111231_def.xml EX-101.DEF 781093
23 XBRL TAXONOMY EXTENSION LABEL LINKBASE DOCUMENT mdu-20111231_lab.xml EX-101.LAB 1764666
24 XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE DOCUMENT mdu-20111231_pre.xml EX-101.PRE 977033
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-K | Act: 34 | File No.: 001-03480 | Film No.: 12636108
SIC: 1400 Mining & Quarrying of Nonmetallic Minerals (No Fuels)