Natural Resource Partners L.P. owns, operates, manages and leases a portfolio of mineral properties in the United States, including interests in coal, trona and soda ash, crude oil and natural gas, construction aggregates, frac sand and other natural resources. The Company's Coal, Hard Mineral Royalty and Other segment consists primarily of coal royalty, coal related transportation and processing assets, aggregate and industrial minerals royalty assets and timber. Its coal reserves are primarily located in Appalachia, the Illinois Basin and the Western United States. Its Soda Ash segment consists of the Company's non-controlling equity interest in a trona ore mining operation and soda ash refinery in the Green River Basin, Wyoming. The VantaCore segment consists of its construction materials business. The Oil and Gas segment consists of its working interests, royalty interests and overriding royalty interests in oil and natural gas properties.