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Filing Detail
Form 11-K - Annual report of employee stock purchase, savings and similar plans:
SEC Accession No. 0000067716-12-000052
Filing Date
2012-06-14
Accepted
2012-06-14 10:04:31
Documents
2
Period of Report
2011-12-31

Document Format Files

Seq Description Document Type Size
1 MDU RESOURCES GROUP, INC. FORM 11-K mduform11-k.htm 11-K 303866
2 CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM exhibit23.htm EX-23 2566
  Complete submission text file 0000067716-12-000052.txt   307543
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: 11-K | Act: 34 | File No.: 001-03480 | Film No.: 12906539
SIC: 1400 Mining & Quarrying of Nonmetallic Minerals (No Fuels)