many individual pools contain more cesium-137 than was released by all atmospheric nuclear weapons tests combined. These utterly lethal radionuclides will require some form of supervision for hundreds of thousands of years....Clue for you, Steven: Cs-137 has a half-life of 30.17 years. Roughly 90% of it disappears every century. In 3 centuries spent nuclear fuel is so low on gamma-emitters that it can be handled with gloves, and in 5 all the Cs-137 and Sr-90 are effectively gone and the spent fuel has LESS activity than the raw uranium ore from which it came. What remains has such low activity, and most of it alpha-emissions, that you're probably more at risk from heavy-metal poisoning than radiation if you eat it. Those risks are pretty low, too; the "UPPU" group who got significant body burdens of plutonium through accidents show no related ill effects.
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