March 17, 2009 1:26 PM

U.S. now has no takers for its spent nuclear bomb materials

Duke Energy was the only U.S. utility that had agreed to use so-called mixed-oxide fuel in its nuclear plants, and it has let its contract expire. The fuel contains a small percentage of weapons-grade plutonium taken from retired nuclear warheads and is part of the government's plan for disposing of surplus plutonium.

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