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  2. RDS-1 - Wikipedia

    en.wikipedia.org/wiki/RDS-1

    The United States assigned it the code-name Joe-1, in reference to Joseph Stalin. It was detonated on 29 August 1949 at 7:00 a.m., [2] at the Semipalatinsk Test Site, Kazakh SSR, [3] after top-secret research and development as part of the Soviet atomic bomb project. [citation needed]

  3. History of nuclear weapons - Wikipedia

    en.wikipedia.org/wiki/History_of_nuclear_weapons

    The Joe-1 atomic bomb test by the Soviet Union that took place in August 1949 came earlier than expected by Americans, and over the next several months there was an intense debate within the U.S. government, military, and scientific communities regarding whether to proceed with development of the far more powerful Super. [50]

  4. List of nuclear weapons tests - Wikipedia

    en.wikipedia.org/wiki/List_of_nuclear_weapons_tests

    Test No. 6, First hydrogen bomb test – June 17, 1967; CHIC-16, 200 kt-1 Mt atmospheric test – June 17, 1974 [25] #21, Largest hydrogen bomb tested by China (4 megatons) - November 17, 1976 #29, Last atmospheric test – October 16, 1980. This is to date the last atmospheric nuclear test by any country. [26]

  5. Timeline of nuclear weapons development - Wikipedia

    en.wikipedia.org/wiki/Timeline_of_nuclear...

    1949 – August 29 – The Soviet Union conducts its first atomic test, RDS-1 (nicknamed Joe 1 by the Americans). [19] 1949 – September 3 – U.S. atmospheric monitoring flights begin detecting effects of the Soviet test. [19] 1949 – September 23 – President Truman announces that the Soviets have conducted an atomic test. [19]

  6. Today in history: Atomic bomb dropped on Hiroshima - AOL

    www.aol.com/news/2015-08-06-this-day-in-history...

    On August 6, 1945, the United States became the first an only nation to use an atomic weapon during war when Enola Gay -- an American bomber -- dropped a five-ton atomic bomb on the Japanese city ...

  7. List of nuclear weapons - Wikipedia

    en.wikipedia.org/wiki/List_of_nuclear_weapons

    Bombs RDS-1, 22 kiloton bomb. Tested 29 August 1949 as "First Light" (Joe 1). Total of 5 stockpiled; RDS-2, 38 kiloton bomb. Tested 24 September 1951 as "Second Light." The RDS-2 was an entirely Russian design, delayed by development of the RDS-1; RDS-3, 42 kiloton bomb. First Soviet bomb tested in an airdrop on 18 October 1951.

  8. Dayton Project - Wikipedia

    en.wikipedia.org/wiki/Dayton_Project

    Those working on the project were ultimately responsible for creating the polonium-based modulated neutron initiators that were used to begin the chain reactions in the atomic bombs. The Dayton Project began in 1943 when Monsanto 's Charles Allen Thomas was recruited by the Manhattan Project to coordinate the plutonium purification and ...

  9. Chronicling history: 'A Commitment to Peace' tells the story ...

    www.aol.com/chronicling-history-commitment-peace...

    Mar. 16—The Manhattan Project in New Mexico was front and center in 1945. In nanoseconds, the bombing of Hiroshima and Nagasaki in Japan at the end of World War II changed the nature of warfare ...