Bull Mountain Coal Mining, Inc.

Signal Peak Energy, LLC

Mining

Roundup, MT

Colstrip United

Colstrip, Montana

BLUE RIDGE COAL CORPORATION

Coal Mining

ABINGDON, Virginia

Bronco Utah Operations

Coal Mining

Emery, UT

Corsa Coal Corporation

Mining

Stillwater Mining Company

Mining

Columbus, MT

Traylor Bros., Inc.

Construction

Evansville, IN

Zooks Solutions Inc

Mining

Price, Utah

Gentry Mountain Mining

Mining

Huntington, Utah

Allegiance Coal Limited

Mining

Sydney, New South Wales