Types of Uranium

Politicians like to scare you by conflating enriched uranium used to generate electric power with that used for weapons. Natural uranium is 0.7% U235 (the reactive part). CANDU (Canada Deuterium Uranium) reactors can work with just a slight enrichment to 0.9%. Light water reactors can work with 3%. However, weapon grade requires 90%. Since U238 and U235 are chemically identical, just a tiny difference in weight, it is extremely difficult to separate them. The technology to enrich uranium for electric power is nowhere near that required to do it for nuclear weapons. On the other hand, sloppiness in storing such materials means even weapons grade plutonium is freely available on the black market.

~ Roedy (1948-02-04 age:70)