Natural Resource Partners L.P. is engaged in owning, managing, and leasing a diversified portfolio of mineral properties in the United States, including interests in coal and other natural resources. The Company operates through two segments: Mineral Rights, and Soda Ash. The Mineral Rights segment consists of approximately 13 million acres of mineral interests and other subsurface rights across the United States. Its ownership provides critical inputs for the manufacturing of steel, electricity, and basic building materials, as well as opportunities for carbon sequestration and renewable energy. The Soda Ash segment consists of the Company's 49% non-controlling equity interest in Sisecam Wyoming LLC (Sisecam Wyoming), a trona ore mining and soda ash production business located in the Green River Basin of Wyoming. Sisecam Wyoming mines trona and processes it into soda ash that is sold both domestically and internationally into the glass and chemicals industries.