Thorium is not rare. In fact, as shown here, the U.S. buried 3,200 tonnes of thorium in the Nevada desert when its interest in thorium withered. And a single Idaho mine could supply 4,500 tonnes of thorium per year. It’s estimated there are already 1.2 million tonnes of known economically extractable thorium in the world, with the U.S. sitting on 160,000 tonnes of it, according to the U.S. Geological Survey.