Headquarters:
DHS Drilling Company
P.O. Box 277
Casper, WY 82602
Telephone: (307) 473-5377
Fax: (307) 473-5447
Personnel:

Chapman Trucking
P.O. Box 309
Mills, WY 82644
Telephone: (307) 472-7000
Toll Free: (800) 962-6233

Regional Office:
DHS Drilling Company
370 Seventeenth Street, Suite 4300
Denver, CO 80202
Telephone: (303) 575-0303