A couple of years ago, the U.S. Geological Survey published a list of minerals on which the country was 100% import-reliant. Apart from rare earths, the list included arsenic, asbestos, bauxite and alumina, cesium, fluorspar, graphite, indium, manganese, niobium, scandium, tantalum and thorium. The US needs to import large quantities of other metals, too, like antimony and tin.
