dispose of surplus weapons plutonium.
The US Congress has appropriated more than $ 200 million for cooperation with Russia's plutonium disposition program.
enriched uranium, plus 150 metric tons of plutonium.
In order for detonation to occur, a sphere of plutonium has to be rapidly compressed by a series of conventional high explosives.
spent fuel rods canned in accordance with the 1994 Agreed Framework contain enough plutonium for several more weapons.