Natural Resource Partners L.P owns, manages, and leases coal reserves in Appalachia, the Illinois Basin, and the Northern Powder River Basin in the U.S. The company also owns industrial minerals and aggregates properties in the U.S., oil and gas properties in Louisiana, timber assets in West Virginia, and a trona ore mining operation and soda ash refinery in Wyoming. Natural Resource Partners was incorporated in 2002 and is headquartered in Houston, TX.