RICHLAND, Wash. — B Reactor has been designated a National Historic Landmark, an important step in preserving the historic reactor as a museum.
Lynn Scarlett, the Department of Interior deputy secretary, made the announcement Monday along with Jeffrey Kupfer, the Department of Energy acting deputy secretary.
B Reactor was the world's first full-scale nuclear reactor, built in 11 months as the United States raced to produce an atomic bomb during World War II.
The reactor produced plutonium for the first nuclear explosion in the New Mexico desert and for the bomb dropped on Nagasaki, Japan. It continued to supply plutonium for the nation's stockpile during the Cold War.
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