MP Materials is a rare earth mining company based in the United States. The company operates the Mountain Pass mine in California, which is the only rare earth mining and processing facility in the country. MP Materials produces rare earth oxides, which are used in a variety of high-tech products, including smartphones, electric vehicles, and wind turbines. The company was founded in 2017 and went public in 2020 through a merger with a special purpose acquisition company (SPAC). MP Materials is committed to sustainable and responsible mining practices and has received certification from the Initiative for Responsible Mining Assurance (IRMA).