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    When did the US stop testing nuclear weapons?

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  2. United States; Nuclear program start date: 21 October 1939: First nuclear weapon test: 16 July 1945: First thermonuclear weapon test: 1 November 1952: Last nuclear test: 23 September 1992: Largest yield test: 15 Mt (63 PJ) (1 March 1954) Total tests: 1,054 detonations: Peak stockpile: 31,255 warheads (1967) Current stockpile: 3,750 (2021) Maximum missile range

    • 16 July 1945
    • 23 September 1992
    • 1 November 1952
    • 21 October 1939
  3. The nuclear weapons tests of the United States were performed from 1945 to 1992 as part of the nuclear arms race. The United States conducted around 1,054 nuclear tests by official count, including 216 atmospheric, underwater, and space tests. Most of the tests took place at the Nevada Test Site (NNSS/NTS) and the Pacific Proving Grounds in the Marshall Islands and off Kiritimati

    Series Or Years
    Years Covered
    Tests [summ 1]
    Devices Fired
    1945
    1
    1
    1945
    2
    2
    1946
    2
    2
    1948
    3
    3
  4. Sep 23, 2018 · The last US nuclear weapons test took place on Sept. 23, 1992, at the Nevada Test Site. It was the 1,030th such experiment, the most conducted by any country since the first US atom bomb was ...

  5. US conducts first ever nuclear test. The United States tested a 15-20 kilotonne nuclear weapon south of Socorro, New Mexico. Radiation levels around the site remain 10 times as high as natural background radiation. Photo: https://www.atomicheritage.org/history/trinity-test-1945

  6. The US and Russia no longer do nuclear weapons tests as they both signed on to the two test ban treaties signed between 1963 and 1996 that bans nuclear weapons tests. The latter of these, The Comprehensive Nuclear Test Ban Treaty prohibits any and all nuclear weapon test explosions.

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