Apple has announced a $500 million investment in MP Materials, a rare earth mining company based in the US. With the deal, the two companies will partner on the development of a rare earth magnet recycling line in Mountain Pass, California, allowing Apple to use reprocessed electronics and scrap material to build its products. The new deal with MPMaterials also involves expanding the rare earth company’s Fort Worth, Texas factory with neodymium magnet manufacturing lines designed for Apple products. MP Materials expects production to “ramp up to support hundreds of millions of Apple devices.” It will also continue collaborating with Apple to improve magnet production and end-of-life recovery. “Rare earth materials are essential for making advanced technology, and this partnership will help strengthen the supply of these vital materials here in the United States,” Apple CEO Tim Cook said in the press release.