| 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%) taken from Soviet era warheads, into LEU, low enriched uranium (less than 5% uranium 235).
To date 463.5 metric tons of bomb-grade HEU have been recycled into 13,345 metric tons of LEU – enough material to produce fuel to power the entire United States for about two years...............................................Full Article: Source
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