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Mdu Resources Group Inc 10-Kfor12/31/04 EX-21

On: Wednesday, 2/23/05, at 2:10pm ET For: 12/31/04 Accession #: 67716-5-48 File #: 1-03480

Previous ‘10-K’:10-K’ on 2/27/04 for 12/31/03 Next:10-K’ on 2/22/06 for 12/31/05 Latest:10-K’ on 2/23/18 for 12/31/17

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  As Of                Filer                Filing    ForOnAs Docs:Size

 2/23/05  Mdu Resources Group Inc           10-K       12/31/04    7:388K

Annual Report Form 10-K
Filing Table of Contents

Document/Exhibit                   Description                      Pages   Size 

 1: 10-K        Mdu Resources Group, Inc. 2004 10-K                  156   674K 
 2: EX-12       Computation of Ratio of Earnings                       2     9K 
 3: EX-21       Subsidiaries of Mdu Resources Group, Inc.              2    11K 
 4: EX-23       Independent Auditors' Consent                          1      8K 
 5: EX-31.A     Section 302 Certification of CEO                       2    11K 
 6: EX-31.B     Section 302 Certification of CFO                       2    11K 
 7: EX-32       Section 906 Certifications of CEO and CFO              1      7K 


EX-21 Subsidiaries of Mdu Resources Group, Inc.



LIST OF SUBSIDIARIES (Effective 12/31/04) Alaska Basic Industries, Inc., an Alaska corporation Anchorage Sand and Gravel Company, Inc., an Alaska corporation Baldwin Contracting Company, Inc., a California corporation Bauerly Brothers, Inc., a Minnesota corporation Bell Electrical Contractors, Inc., a Missouri corporation Bitter Creek Pipelines, LLC, a Colorado limited liability company BIV Generation Company, L.L.C., a Delaware limited liability company Brush Generation Company, L.L.C., a Delaware limited liability company Brush Power, LLC, a Delaware limited liability company Buffalo Bituminous, Inc., a Minnesota corporation Capital Electric Construction Company, Inc., a Kansas corporation Capital Electric Line Builders, Inc., a Kansas corporation Centennial Energy Holdings, Inc., a Delaware corporation Centennial Energy Holdings Trinidad LLC, a Delaware limited liability company Centennial Energy Resources LLC, a Delaware limited liability company Centennial Energy Resources International, Inc., a Delaware corporation Centennial Holdings Capital LLC, a Delaware limited liability company Centennial Power, Inc., a Delaware corporation Central Oregon Redi-Mix, L.L.C., an Oregon limited liability company ClearFlame, LLC, a Colorado limited liability company Colorado Cogen Operators LLC, a Colorado limited liability company Colorado Energy Management, LLC, a Colorado limited liability company Colorado Power Partners, a Colorado partnership Concrete, Inc., a California corporation Connolly-Pacific Co., a California corporation Continental Line Builders, Inc., a Delaware corporation DSS Company, a California corporation E.S.I., Inc., an Ohio corporation Fidelity Exploration & Production Company, a Delaware corporation Fidelity Oil Co., a Delaware corporation Frebco, Inc., an Ohio corporation Fred Carlson Company, LLC, a Delaware limited liability company FutureSource Capital Corp., a Delaware corporation Granite City Concrete of Watkins, Inc., a Minnesota corporation Granite City Concrete Pumping, LLC, a Minnesota limited liability company Granite City Ready Mix, Inc., a Minnesota corporation Hamlin Electric Company, a Colorado corporation Hap Taylor & Sons, Inc., an Oregon corporation Harp Engineering, Inc., a Montana corporation Hartwell, LLC, a Delaware limited liability company Hawaiian Cement, a Hawaii partnership Hawaii Pier 32 Holding Corporation, a Hawaii corporation ILB Hawaii, Inc., a Hawaii corporation Innovatum International Limited, a Scotland private limited company Innovatum, Inc., a Texas corporation International Line Builders, Inc., a Delaware corporation InterSource Insurance Company, a Vermont corporation JTL Group, Inc., a Montana corporation JTL Group, Inc., a Wyoming corporation KRC Aggregate, Inc., a Delaware corporation KRC Holdings, Inc., a Delaware corporation Knife River Corporation, a Delaware corporation Knife River Dakota, Inc., a Delaware corporation Knife River Hawaii, Inc., a Delaware corporation Knife River Marine, Inc., a Delaware corporation LTM, Incorporated, an Oregon corporation Loy Clark Pipeline Co., an Oregon corporation M. Funes Concrete, Inc., a Hawaii corporation MDU Brasil Ltda., a Brazil limited liability company MDU Chile Inversiones Ltda., a Chile limited liability company MDU Resources International LLC, a Delaware limited liability company MDU Resources Luxembourg I LLC S.a.r.l., a Luxembourg limited liability company MDU Resources Luxembourg II LLC S.a.r.l., a Luxembourg limited liability company Medford Ready Mix, Inc., a Delaware corporation Morgan Generation Company, L.L.C., a Delaware limited liability company Morse Bros., Inc., an Oregon corporation Mountain View Power Partners, LLC, a Delaware limited liability company Netricity LLC, an Alaska limited liability company New Avoca Gas Storage LLC, a Texas limited liability company Newco, Inc., an Ohio corporation Northstar Materials, Inc., a Minnesota corporation Oregon Electric Construction, Inc., an Oregon corporation Pouk & Steinle, Inc., a California corporation Prairielands Energy Marketing, Inc., a Delaware corporation Rocky Mountain Contractors, Inc., a Montana corporation Rocky Mountain Power, Inc., a Montana corporation Rogue Aggregates, Inc., an Oregon corporation Seven Brothers Ranches, Inc., a Wyoming corporation Utility Services, Inc., a Delaware corporation WBI Canadian Pipeline, Ltd., a Canadian corporation WBI Energy Services, Inc., a Delaware corporation WBI Holdings, Inc., a Delaware corporation WBI Pipeline & Storage Group, Inc., a Delaware corporation WHC, Ltd., a Hawaii corporation The Wagner-Smith Company, an Ohio corporation Wagner-Smith Equipment Co., a Delaware corporation Wagner-Smith Pumps & Systems, Inc., an Ohio corporation Williston Basin Interstate Pipeline Company, a Delaware corporation Young Contractors, Inc., a Texas corporation
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