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  2. Manhattan Project - Wikipedia

    en.wikipedia.org/wiki/Manhattan_Project

    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 ...

  3. Trinity (nuclear test) - Wikipedia

    en.wikipedia.org/wiki/Trinity_(nuclear_test)

    December 20, 1968. Trinity was the code name of the first detonation of a nuclear weapon, conducted by the United States Army at 5:29 a.m. MWT [ a ] (11:29:21 GMT) on July 16, 1945, as part of the Manhattan Project. The test was of an implosion-design plutonium bomb, nicknamed the "gadget", of the same design as the Fat Man bomb later detonated ...

  4. Timeline of the Manhattan Project - Wikipedia

    en.wikipedia.org/wiki/Timeline_of_the_Manhattan...

    March 11: Beta calutrons commence operation at Oak Ridge. [69] April 5: At Los Alamos, Emilio Segrè receives the first sample of reactor-bred plutonium from Oak Ridge, and within ten days discovers that the spontaneous fission rate is too high for use in a gun-type fission weapon (because of Pu-240 isotope present as an impurity in the Pu-239 ...

  5. Human radiation experiments - Wikipedia

    en.wikipedia.org/wiki/Human_radiation_experiments

    Human radiation experiments. Joseph G. Hamilton was the primary researcher for the human plutonium experiments done at U.C. San Francisco from 1944 to 1947. [1] Hamilton wrote a memo in 1950 discouraging further human experiments because the AEC would be left open "to considerable criticism," since the experiments as proposed had "a little of ...

  6. Project Y - Wikipedia

    en.wikipedia.org/wiki/Project_Y

    A Little Boy unit on Tinian connected to test equipment, possibly to test or charge components within the device. After repeated slippages, the first shipment of slightly enriched uranium (13 to 15 percent uranium-235) arrived from Oak Ridge in March 1944. Shipments of highly enriched uranium commenced in June 1944. Criticality experiments and ...

  7. RaLa Experiment - Wikipedia

    en.wikipedia.org/wiki/RaLa_Experiment

    The Oak Ridge laboratory was the first laboratory where remote manipulators were used for work with radioactive materials. The delivery was performed by a truck with a two-person crew, driving 1,500 miles (2,400 km) nonstop. [1] At Oak Ridge, uranium slugs were irradiated for 40 days, then left to cool down for 1 to 5 days, then dissolved.

  8. British contribution to the Manhattan Project - Wikipedia

    en.wikipedia.org/wiki/British_contribution_to...

    The Montreal Laboratory would have access to data from the research reactors at Argonne and the X-10 Graphite Reactor at Oak Ridge, but not from the production reactors at the Hanford Site; nor would they be given any information about plutonium. This arrangement was formally approved by the Combined Policy Committee meeting on 19 September 1944.

  9. Oak Ridge National Laboratory - Wikipedia

    en.wikipedia.org/wiki/Oak_Ridge_National_Laboratory

    Operating agency. UT–Battelle. Website. ornl.gov. Map. Location in Tennessee. [ 2 ] Oak Ridge National Laboratory (ORNL) is a federally funded research and development center in Oak Ridge, Tennessee, United States. Founded in 1943, the laboratory is now sponsored by the United States Department of Energy and administered by UT–Battelle, LLC.