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Form 10-K - Annual report [Section 13 and 15(d), not S-K Item 405]:
SEC Accession No. 0000067716-14-000029
Filing Date
2014-02-21
Accepted
2014-02-21 15:29:34
Documents
20
Period of Report
2013-12-31

Document Format Files

Seq Description Document Type Size
1 10-K mdu-12312013x10k.htm 10-K 4063032
2 SECTION 16 OFFICERS AND DIRECTORS mdu-12x31x13xex10l.htm EX-10.L 33593
3 INSTRUMENT OF AMENDMENT TO THE RETIREMENT PLAN, DATED, DECEMBER 31, 2013 mdu-12x31x13xex10aa.htm EX-10.AA 62720
4 EMPLOYMENT LETTER FOR JEFFREY S. THIEDE, DATED MAY 16, 2013 mdu-12x31x13xex10ab.htm EX-10.AB 37017
5 COMPUTATION OF RATIO OF EARNINGS mdu-123113xex12.htm EX-12 71756
6 SUBSIDIARIES OF MDU RESOURCES GROUP, INC. mdu-12x31x13xex21.htm EX-21 48418
7 CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM mdu-123113xex23a.htm EX-23.A 3130
8 CONSENT OF RYDER SCOTT COMPANY, L.P. mdu-123113xex23b.htm EX-23.B 10863
9 CERTIFICATION OF CEO - SEC 302 SOX ACT 2002 mdu-123113xex31a.htm EX-31.A 10460
10 CERTIFICATION OF CFO - SEC 302 SOX ACT 2002 mdu-123113xex31b.htm EX-31.B 10443
11 CERTIFICATION OF CEO AND CFO - 18 USC SEC 1350 - SEC 906 SOX ACT 2002 mdu-123113xex32.htm EX-32 6860
12 MINE SAFETY DISCLOSURES mdu-123113xex95.htm EX-95 190848
13 RYDER SCOTT COMPANY, L.P. REPORT DATED JANUARY 27, 2014 mdu-12x31x13xexx99a.htm EX-99.A 141712
14 FIRST AMENDMENT TO EQUITY DISTRIBUTION AGREEMENT, DATED DECEMBER 2, 2013 mdu-12x31x13xex99c.htm EX-99.C 30593
  Complete submission text file 0000067716-14-000029.txt   30960838

Data Files

Seq Description Document Type Size
15 XBRL INSTANCE DOCUMENT mdu-20131231.xml EX-101.INS 5820314
16 XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT mdu-20131231.xsd EX-101.SCH 143194
17 XBRL TAXONOMY EXTENSION CALCULATION LINKBASE DOCUMENT mdu-20131231_cal.xml EX-101.CAL 155185
18 XBRL TAXONOMY EXTENSION DEFINITION LINKBASE DOCUMENT mdu-20131231_def.xml EX-101.DEF 851166
19 XBRL TAXONOMY EXTENSION LABEL LINKBASE DOCUMENT mdu-20131231_lab.xml EX-101.LAB 1841684
20 XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE DOCUMENT mdu-20131231_pre.xml EX-101.PRE 1100563
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.: 14633339
SIC: 1400 Mining & Quarrying of Nonmetallic Minerals (No Fuels)