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Filing Detail
Form 11-K - Annual report of employee stock purchase, savings and similar plans:
SEC Accession No. 0000067716-06-000114
Filing Date
2006-06-15
Accepted
2006-06-15 13:48:43
Documents
1
Period of Report
2005-12-31

Document Format Files

Seq Description Document Type Size
1 MDU RESOURCES 2005 11-K mdu200511k.htm 11-K 221306
  Complete submission text file 0000067716-06-000114.txt   222839
Mailing Address 1200 WEST CENTURY AVENUE BISMARCK ND 58506-5650
Business Address 1200 WEST CENTURY AVENUE BISMARCK ND 58506-5650 701-530-1013
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.: 06906847
SIC: 1400 Mining & Quarrying of Nonmetallic Minerals (No Fuels)