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Manhattan District The Trinity test of the Manhattan Project on 16 July 1945 was the first detonation of a nuclear weapon. Active 1942–1946 Disbanded 15 August 1947 Country United States United Kingdom Canada Branch U.S. Army Corps of Engineers Garrison/HQ Oak Ridge, Tennessee, U.S. Anniversaries 13 August 1942 Engagements Allied invasion of Italy Allied invasion of France Allied invasion of ...
A major accident might result in loss of life and severe health effects, and Groves was concerned that even a minor one could disrupt vital war production – particularly of aluminum – or require evacuation of the Manhattan Project's isotope separation plants. But spreading the Oak Ridge facilities over a larger area would involve the ...
Manhattan Project & Manhattan Engineer District Organization Chart, effective May 5, 1946, showing Brigadier Gen. Kenneth D. Nichols as district engineer of the MED. In summary: Leadership on full ...
The formerly secret project was made public by the Smyth Report. In the immediate postwar years, the Manhattan Project assisted weapons testing in Operation Crossroads. It maintained control over American atomic weapons research and production until January 1947, when the Atomic Energy Act of 1946 took effect.
The Manhattan Project National Historical Park includes historic B Reactor at the Hanford nuclear site. It is open for bus tours for part of 2024. Tours will be offered only until construction ...
The half-life of La-140 is 40.224 hours; it undergoes beta decay to stable cerium-140. It was prepared from barium-140, a common fission product isolated from the spent fuel from the Oak Ridge National Laboratory X-10 Graphite Reactor, [14] and later, after 1948, also from the Hanford Site plutonium-239 producing nuclear reactors.
Theodore Alvin Hall (October 20, 1925 – November 1, 1999) was an American physicist and an atomic spy for the Soviet Union, who, during his work on United States efforts to develop the first and second atomic bombs during World War II (the Manhattan Project), gave a detailed description of the "Fat Man" plutonium bomb, and of several processes for purifying plutonium, to Soviet intelligence.
The Manhattan Project was a large-scale collaboration between the U.S. government and the private sector during World War Two that produced the first atomic bombs.