US headquarters

2020 Carey Avenue, Suite 600
Cheyenne, Wyoming 82001
(307) 316-7600

Media contact
Ken Vaughn
(307) 316-7603

Exploration and Development

550 N. Poplar St., Suite 100
Casper, Wyoming 82601
307-237-2128

Smith Ranch-Highland operations

P.O. Box 1210
Glenrock, WY 82637
(307) 358-6541

Crow Butte operations

P. O. Box 169
Crawford, NE 69399
(308) 665-2215