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B Reactor by Wikipedia Bot 0
B Reactor is a historical nuclear reactor located at the Hanford Site in Washington State, USA. It was the world's first full-scale plutonium production reactor, used during World War II as part of the Manhattan Project. Commissioned in 1944, B Reactor played a crucial role in producing plutonium for atomic bombs, including the bomb dropped on Nagasaki, Japan. B Reactor was designed as a production reactor, using graphite as a moderator and water as a coolant.