MDU RESOURCES GROUP, INC.
List of Subsidiaries
(effective December 31, 2019)
Subsidiaries | Jurisdiction of Formation |
1250 Gladding Road, LLC | Delaware |
Alaska Basic Industries, Inc. | Alaska |
Ames Sand & Gravel, Inc. | North Dakota |
Anchorage Sand and Gravel Company, Inc. | Alaska |
ARC Fabricators, L.L.C. | South Dakota |
Baldwin Contracting Company, Inc. | California |
Bell Electrical Contractors, Inc. | Missouri |
Bombard Electric, LLC | Nevada |
Bombard Mechanical, LLC | Nevada |
Capital Electric Construction Company, Inc. | Kansas |
Capital Electric Line Builders, Inc. | Kansas |
Cascade Natural Gas Corporation | Washington |
Centennial Energy Holdings, Inc. | Delaware |
Centennial Energy Resources International, Inc. | Delaware |
Centennial Energy Resources LLC | Delaware |
Centennial Holdings Capital LLC | Delaware |
Central Oregon Redi-Mix, LLC | Oregon |
Concrete, Inc. | California |
Connolly-Pacific Co. | California |
D S S Company | California |
Desert Fire Holdings, Inc. | Nevada |
Desert Fire Protection, a Nevada Limited Partnership | Nevada |
Desert Fire Protection, Inc. | Nevada |
Desert Fire Protection, LLC | Nevada |
Duro Electric Company | Colorado |
E & ER Company | South Dakota |
Ellis & Eastern Company | South Dakota |
E.S.I., Inc. | Ohio |
Fairbanks Materials, Inc. | Alaska |
Fidelity Exploration & Production Company | Delaware |
Fidelity Oil Co. | Delaware |
Frebco, Inc. | Ohio |
FutureSource Capital Corp. | Delaware |
Granite City Ready Mix, Inc. | Minnesota |
Hawaiian Cement | Hawaii |
Intermountain Gas Company | Idaho |
International Line Builders, Inc. | Delaware |
InterSource Insurance Company | Vermont |
Jebro Incorporated | Iowa |
JTL Group, Inc. (Montana corporation) | Montana |
JTL Group, Inc. (Wyoming corporation) | Wyoming |
Kent’s Oil Service | California |
Knife River Corporation | Delaware |
Knife River Corporation - Mountain West | Delaware |
Knife River Corporation - North Central | Minnesota |
Knife River Corporation - Northwest | Oregon |
Knife River Corporation - South | Texas |
Knife River Dakota, Inc. | Delaware |
Knife River Hawaii, Inc. | Delaware |
Knife River Marine, Inc. | Delaware |
Knife River Midwest, LLC | Delaware |
KRC Holdings, Inc. | Delaware |
Lone Mountain Excavation & Utilities, LLC | Nevada |
Loy Clark Pipeline Co. | Oregon |
LTM, Incorporated | Oregon |
MDU Construction Services Group, Inc. | Delaware |
MDU Energy Capital, LLC | Delaware |
MDU Industrial Services, Inc. | Delaware |
MDU Resources Luxembourg I LLC S.a.r.l. | Luxembourg |
MDU Resources Luxembourg II LLC S.a.r.l. | Luxembourg |
MDU United Construction Solutions, Inc. | Delaware |
Montana-Dakota Utilities Co. | Delaware |
Nevada Solar Solutions, LLC | Delaware |
Nevada Valley Solar Solutions I, LLC | Delaware |
Northstar Materials, Inc. | Minnesota |
OEG, Inc. | Oregon |
Prairie Cascade Energy Holdings, LLC | Delaware |
Prairie Intermountain Energy Holdings, LLC | Delaware |
Rail to Road, Inc. | South Dakota |
Rocky Mountain Contractors, Inc. | Montana |
Sweetman Const. Co. | South Dakota |
USI Industrial Services, Inc. | Delaware |
Wagner Group, Inc., The | Delaware |
Wagner-Smith Company, The | Ohio |
Wagner-Smith Equipment Co. | Delaware |
WBI Canadian Pipeline, Ltd. | Canada |
WBI Energy Midstream, LLC | Colorado |
WBI Energy Transmission, Inc. | Delaware |
WBI Energy, Inc. | Delaware |
WBI Holdings, Inc. | Delaware |
WHC, Ltd. | Hawaii |