Twenty Mile Mine produces coal for the generation of electricity through utilities located in Kansas, Mississippi, Wyoming, Iowa, Kentucky, Illinois, Texas, New Mexico, and Piedras Negras, Mexico.
Tri-State Generation and Transmission Association is a wholesale electric power supplier owned and governed by the 43 rural electric cooperatives that it serves across a four-state region.
Award winning surface coal mining operation for over 30 years. Average quality of coal rates at 10,325 average Btu subbituminous thermal coal. Permitted to mine 9 millions tons of coal per year.