Contact Us
COG Company Headquarters 3889 Hwy. 374 Green River, WY 82935
Mailing Address P.O. Box 790 Green River, WY 82935
Telephone Facsimile (307)875-5418 (307)875-5423
Hours of Operation: 9:00 a.m. to 5:00 p.m. Monday-Friday
