historyWikipedia1943 · Benton County, Washington, USA

The Hanford site built the plutonium for the Trinity test and Nagasaki bombs in just under three years

the gist

The Hanford Engineer Works was a nuclear production complex in Benton County, Washington, established by the US government in 1943 during World War II. It was part of the Manhattan Project and contained B Reactor, the first full-scale plutonium production reactor. Plutonium made there was used in the Trinity test in July 1945 and in the Fat Man bomb dropped on Nagasaki in August 1945. The site was chosen far from dense populations on the Columbia River, and the government acquired land for it under its war powers, relocating some 1,500 residents. Construction began in March 1943 and employed nearly 45,000 workers at its peak. Three reactors, B, D and F, each ran at 250 megawatts. B Reactor went critical in September 1944 and produced its first plutonium in November. The plant kept producing plutonium for weapons until 1971.

so what

Hanford is the source of much of the plutonium at the core of the atomic age, and its legacy includes major environmental cleanup challenges. It shows how the bomb was an industrial project as much as a scientific one.

fun fact

B Reactor at Hanford has been preserved as a National Historic Landmark.

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