the fourth type of reactor: the breeder reactor which produces plutonium from spent uranium.. Now what do you suppose governments do with spent uranium fuel rods? Well, in France they re-process them. Viva La France! In the USA, they sneak them away in the dead of night during a refueling operation. No one knows where they wind up. Three guesses. And spent uranium artillery projectiles don't count.
from the article: What happens in 50 years when the oil runs out?