FILE PHOTO: A wheel loader operator fills a truck with ore at the MP Materials rare earth mine in Mountain Pass, California, U.S. January 30, 2020. Picture taken January 30, 2020. REUTERS/Steve Marcus
FILE PHOTO: A wheel loader operator fills a truck with ore at the MP Materials rare earth mine in Mountain Pass, California, U.S. January 30, 2020. Picture taken January 30, 2020. REUTERS/Steve Marcus