Natural Resource Partners L.P. owns and manages mineral properties in the United States, with interests in coal, soda ash, trona, and other natural resources. The company operates through two segments: Mineral Rights and Soda Ash, and its reserves are located primarily in Appalachia, the Illinois Basin, and the Northern Powder River Basin in the United States. NRP (GP) LP is the general partner of the company, which was established in 2002 and is headquartered in Houston, Texas.