The only US rare earths miner is crying foul over China’s decision to raise tariffs on American shipments of raw materials used in electric vehicles.
MP Materials – once the world’s biggest producer of rare-earth materials – exports 3 000 to 4 000 metric tons of concentrates to the Asian nation from its Mountain Pass mine in California. The elements MP exports include neodymium and praseodymium, used in the magnets for electric motors.