US Uranium Market
Under the terms of the 1993 government-to-government nuclear non-proliferation agreement (Megatons to Megawatts program), the United States and Russia agreed to commercially implement a 20 year program to convert 500 metric tons of HEU (uranium 235 enriched to 90 percent) taken from Soviet era warheads, into LEU, low enriched uranium (less than 5 percent uranium 235).