
A campus of the National Nuclear Security Administration in Oak Ridge, Tenn., in August.
2025-10-18 369词 简单
The agency, which is semiautonomous but overseen by the Energy Department, was created in 2000. It is responsible for maintaining America’s nuclear stockpile and for preventing the proliferation of nuclear weapons around the world. Its precursors include the Atomic Energy Commission and Energy Research and Development Administration.
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