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The Department of Energy's National Nuclear Security Administration on Monday formalized its choice to build the Savannah River Plutonium Processing Facility pit factory out of the remains of the partially constructed Mixed Oxide Fuel Fabrication Facility. The planned pit plant will cost between $6.9 billion and $11.1 billion to build and be ready to annually produce at least 50 pits — fissile plutonium triggers for nuclear weapons — by 2032 or 2035, the civilian nuclear weapons agency wrote in a…
