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6. Plutonium. This radioactive metal is used to produce nuclear weapons, as well as fuel for nuclear reaсtors and energy source in space vehicles. 1 gram of plutonium costs $ 4,000.
6. Plutonium. This radioactive metal is used to produce nuclear weapons, as well as fuel for nuclear reaсtors and energy source in space vehicles. 1 gram of plutonium costs $ 4,000.