Mining occurs within a multi-seam operation consisting of six seams and a 13 mile pit. Pit depths average 180 feet. Mining conditions are extreme, with precipitation exceeding 50 inches per year and pit depths average 400 feet. The average overburden depth is 1,700 feet. Exxon Use the search to find coal information.
Mining occurs within a multi-seam operation consisting of two seams and an eight mile pit.
Pit depths average 105 feet. Includes Antelope Mine , Colowyo Coal Company LP , Cordero Mine and Spring Creek Mine . Lehigh Coal and Navigation Company Anthracite coal producing company in North America. The four mines are Rochelle, North Antelope, Caballo, and Rawhide. Our consistent reclamation record has resulted in national awards for restoration even in sensitive environmental settings.