Manhattan Project

Categories: Social Science | US History | News
    • Official name: Manhattan Engineer District
    • Time Period: 1941 - 1946
    • Started in response to Adolf Hitler's rise to power
    • Administrative Director: Leslie Groves, United States Army
    • Research Director: Robert Oppenheimer
    • Achieved 3 successful detonations
    • Three main project sites: Hanford Site; Oak Ridge, TN; Los Alamos National Laboratory
    • Over 30 sites in total
    • Trinity Test detonated near Alamogordo, New Mexico
    • "Little Boy" detonated over Hiroshima, Japan
    • "Fat Man" detonated over Nagasaki, Japan
    • Project costs neared $2 billion U.S. dollars
    • Nuclear weapons based on concept of Nuclear fission
  • The Manhattan Project was a top-secret operation during World War II to develop a nuclear (atomic) weapon. The project was conducted jointly by the United States, Canada, and the United Kingdom.
  • Key Dates

    1. 1934: Enrico Fermi discovers artificial radioactivity through firing neutrons at uranium atoms
    2. February, 1941: Glenn Seaborg discovers plutonium
    3. 1942: Oppenheimer holds a conference on nuclear weapon design
    4. July 15, 1946: Trinity Test
    5. August 6, 1946: "Little Boy"
    6. August 9, 1946: "Fat Man"

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