In a fission nuclear reactor, uranium-238 can be used to breed plutonium-239, which itself can be used in a nuclear weapon or as a reactor fuel source. Maybe they are using it for military use for new warheads.
13 posted on 12/12/2009 12:27:18 AM PST by ErnstStavroBlofeld
("We will either find a way, or make one."Hannibal/Carthaginian Military Commander)