MP Mine Operations LLC, doing business as MP Materials, owns and operates Mountain Pass, which is a rare earth mining and processing site of scale in North America. The company engages in the mining and processing of rare earth concentrates, including Neodymium and Praseodymium (NdPr) oxide, Lanthanum and cerium oxides, and carbonates. The company was incorporated in 2017 and is based in Las Vegas, Nevada.