Natural Resource Partners LP (NRP) is a master limited partnership that owns and manages mineral properties in the United States. The company's primary focus is on coal, but it also has interests in aggregates, oil and gas, and other natural resources. NRP's business model is to lease its mineral properties to mining companies in exchange for royalty payments based on the amount of resources extracted. The company also has a small portfolio of non-operated working interests in oil and gas properties. NRP was founded in 2002 and is headquartered in Houston, Texas.