About Us

Elk Ridge Mining and Reclamation, LLC. is a subsidiary of Tri-State Generation and Transmission Association, headquartered in Westminster, Colo. Tri-State is a not-for-profit wholesale electric power supplier owned by 45 members, including 42 utility members that it serves across nearly 200,000 square-miles in Colorado, Nebraska, New Mexico and Wyoming.

The organization was formed in 1992 to coordinate mining operations for Tri-State at the newly-developed New Horizon Mine near Nucla, Colo. Today, Elk Ridge Mining and Reclamation, LLC. continues to manage and operate the now retired New Horizon Mine, as well as Colowyo Mine near Meeker, Colo.