Arch of Wyoming is a mine of Arch Coal, which was founded in 1997 through the merger between Ashland Coal and Arch Mineral Corporation. Arch Coal is one of the leading producers of low-sulfur coal in the eastern United States. The company operates mining complexes in Wyoming, Utah, Colorado, West Virginia, Kentucky and Virginia. It also supplies low-sulfur coal to more than 140 power plants in over 30 U.S. states. Arch Coal employs nearly 4,000 individuals. The company provides met and steam coal worldwide. In addition, it has created approximately 200 acres of new wetlands on its reclaimed land. The company s mines have access to inland waterway systems.