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Form 10-K - Annual report [Section 13 and 15(d), not S-K Item 405]:
SEC Accession No. 0000067716-15-000027
Filing Date
2015-02-20
Accepted
2015-02-20 09:50:02
Documents
21
Period of Report
2014-12-31

Document Format Files

Seq Description Document Type Size
1 MDU RESOURCES 2014 FORM 10-K mdu-12312014form10xk.htm 10-K 4594694
2 INSTRUMENT OF AMENDMENT TO 401(K) RETIREMENT PLAN NOV. 25, 2014 mdu-12x31x14ex10ah.htm EX-10.AH 15548
3 INSTRUMENT OF AMENDMENT TO 401(K) RETIREMENT PLAN DEC. 11, 2014 mdu-12x31x14ex10ai.htm EX-10.AI 44553
4 INSTRUMENT OF AMENDMENT TO 401(K) RETIREMENT PLAN DEC. 11, 2014 mdu-12x31x14ex10aj.htm EX-10.AJ 88027
5 INSTRUMENT OF AMENDMENT TO 401(K) RETIREMENT PLAN DEC. 30, 2014 mdu-12x31x14xex10ak.htm EX-10.AK 9409
6 SECTION 16 OFFICERS AND DIRECTORS WITH INDEMNIFICATION AGREEMENTS CHART mdu-12x31x14xex10m.htm EX-10.M 34967
7 COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES mdu-123114xex12.htm EX-12 70692
8 SUBSIDIARIES OF MDU RESOURCES GROUP, INC. mdu-12x31x14xex21.htm EX-21 49285
9 EXHIBIT 23.A mdu-123114xex23a.htm EX-23.A 3029
10 EXHIBIT 23.B mdu-123114xex23b.htm EX-23.B 11318
11 EXHIBIT 31.A mdu-123114xex31a.htm EX-31.A 10392
12 EXHIBIT 31.B mdu-123114xex31b.htm EX-31.B 10374
13 CERTIFICATION OF CHIEF EXECUTIVE OFFICER AND CHIEF FINANCIAL OFFICER mdu-123114xex32.htm EX-32 6936
14 MINE SAFETY DISCLOSURES mdu-123114xex95.htm EX-95 226180
15 RYDER SCOTT COMPANY, L.P. mdu-12x31x14xexx99a.htm EX-99.A 141887
  Complete submission text file 0000067716-15-000027.txt   34336585

Data Files

Seq Description Document Type Size
16 XBRL INSTANCE DOCUMENT mdu-20141231.xml EX-101.INS 6221799
17 XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT mdu-20141231.xsd EX-101.SCH 133321
18 XBRL TAXONOMY EXTENSION CALCULATION LINKBASE DOCUMENT mdu-20141231_cal.xml EX-101.CAL 196241
19 XBRL TAXONOMY EXTENSION DEFINITION LINKBASE DOCUMENT mdu-20141231_def.xml EX-101.DEF 765550
20 XBRL TAXONOMY EXTENSION LABEL LINKBASE DOCUMENT mdu-20141231_lab.xml EX-101.LAB 1796883
21 XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE DOCUMENT mdu-20141231_pre.xml EX-101.PRE 1066315
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.: 15634061
SIC: 1400 Mining & Quarrying of Nonmetallic Minerals (No Fuels)