1. Palmer Drilling, Incorporated 30 E Ridge Rd, Sheridan, WY 82801 Coordinate: 44.80186,-106.9281 Phone: (307) 674-2464
2. Brenco Drilling Po Box 6728, Sheridan, WY 82801 Coordinate: 44.78486,-106.9648 Phone: (307) 751-5723