Mdu Resources Group Inc – ‘10-K’ for 12/31/04 – EX-21

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

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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