For Manhattan Project we have terms and definitions in 2 topics. The topics are Energy and Explosives.

Manhattan Project (Energy)

The U.S. Government project that produced the first nuclear weapons during World War II. Started in 1942, the Manhattan Project formally ended in 1946. The Hanford Site, Oak Ridge Reservation, and Los Alamos National Laboratory were created for this effort. The project was named for the Manhattan Engineer District of the U.S. Army Corps of Engineers.

Manhattan Project (Explosives)

The Manhattan Project was the wartime effort to design and build the first nuclear weapons (Atomic Bomb). A $2-billion effort, centered at Oak Ridge, Tenn., and Hanford, Wash., was required to obtain sufficient amounts of the two necessary isotopes, uranium-235 and plutonium-239. The design and building of the bombs took place at Los Alamos, N.Mex., where J. Robert Oppenheimer directed a large group of American and European-refugee scientists. Following the test explosion of a plutonium device on July 16, 1945, near Alamogordo, N.Mex., a uranium bomb and a plutonium bomb were dropped on, respectively, Hiroshima (Aug. 6) and Nagasaki (Aug. 9).

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