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• n  plutonium 239 that is recovered when nuclear weapons are disassembled; it is stored in plutonium pits

• weapons plutonium

News & Articles

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• World Powers Deadlocked Over Iranian Nuclear Reactor Issue At Vienna Meeting; Iranian Foreign Minister Confident About ...
  World powers were unable to reach a conclusion Wednesday about the future of Iran's planned nuclear reactor that western nations fear could help the country produce weapon-grade plutonium, while the U.S. warned of “hard work” ahead to overcome differences when the sides meet again in April, news reports said.
  March 20, 2014 - International Business Times