The US just secured control of one of the largest heavy rare earth deposits on earth outside China.It's in Greenland. American mining company Critical Metals Corp has received formal approval from the Greenland government to acquire 70% of the Tanbreez deposit in southern Greenland.Estimated resource: 4.7 billion tonnes of rare earth bearing material.27% of those rare earths are heavy rare earth elements (dysprosium, terbium, yttrium ) the ones used in EV motors, wind turbines, and advanced military systems.