The 500 metric tons of highly enriched uranium in 20,000 nuclear warheads contains a tremendous amount of energy.
To get a better idea of how much energy wass involved, consider the following...
Potential Electricity Generated
The low enriched uranium downblended from 500 metric tons of HEU could produce enough electricity to power:
Seattle...for 767 years
The United States...for 2 years
The World...for 5 months
The energy from the uranium in 20,000 nuclear warheads is equivalent to:
Coal: 3.4 billion tons
Oil: 12.2 billion barrels
Natural Gas: 74.5 trillion cubic feet