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The Hanford Site occupies 586 square miles (1,518 km 2) – roughly equivalent to half the total area of Rhode Island – within Benton County, Washington. [1] [2] It is a desert environment receiving less than ten inches (250 mm) of annual precipitation, covered mostly by shrub-steppe vegetation.
The B Reactor at the Hanford Site, near Richland, Washington, was the first large-scale nuclear reactor ever built, at 250 MWth. It achieved criticality on September 26, 1944. It achieved criticality on September 26, 1944.
B Reactor and water treatment area in 1944. The Hanford Engineer Works (HEW) was a nuclear production complex in Benton County, Washington, established by the United States federal government in 1943 as part of the Manhattan Project during World War II. It built and operated the B Reactor, the first full-scale plutonium production reactor.
The B Reactor at the Hanford site was the world’s first full-scale nuclear reactor. Here, scientists and engineers pioneered the technology behind nuclear reactors.
Hanford’s B Reactor, the world’s first full-scale production reactor, is shown from the air in 1944. B Reactor also produced plutonium for the atomic bomb dropped on Nagasaki, Japan, Aug. 9 ...
Tours will close for construction soon through at least 2025.
Editor’s note: On Oct. 16, 2024, about 100 Tri-Cities area leaders and people who worked to preserve Hanford’s historic B Reactor as part of the Manhattan Project National Historical Park ...
After several years of surveying the three sites and five other possible alternatives, the two agencies officially recommended a historical park be established in Hanford, Los Alamos and Oak Ridge. The Department of Energy would continue to manage and own the sites while the National Park Service would provide interpretive services, visitor ...