>>507659609
US claims 21241 nuclear warheads which are 25 kilos of 80% enrichment according to the science, high grade ore is 2% uranium or 20,000ppm even less of that is isotopes need for weapons grade. also to meet the demand for nuclear fuel they use old nuclear warheads as a source after the nonnuclear proliferation treaty was signed, how very convenient!

https://world-nuclear.org/information-library/nuclear-fuel-cycle/uranium-resources/supply-of-uranium