Downblending highly enriched uranium (HEU)
The US Enrichment Corporation has the American sense of formula. It regularly keeps the public informed about the status of 500 tons of surplus Russian military uranium slated for downblending. In spring 2003, 175 tons - the equivalent of 7,000 nuclear warheads - had been already destroyed, the equivalent of 7,000 nuclear warheads, enough to supply a reactor of 1000 megawatts for 320 years and provide electricity to a city like Boston for 270 years.
USEC