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1992
- Underground tests conducted by the Soviet Union continued until 1990, the United Kingdom until 1991, the United States until 1992, and both China and France until 1996.
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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.
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: 3,708 (2023 ...
Sep 23, 2018 · Tim Fernholz. Published September 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...
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July 16, 1945: At 5:30 a.m. near Alamogordo, New Mexico, the United States conducts the first ever nuclear test explosion, code-named Trinity. August 6 and 9, 1945: The United States drops atomic bombs on Hiroshima and Nagasaki, leading to over 340,000 casualties by 1950. July 1, 1946:The United States begins Operation Crossroads, a series of nucle...
October 3, 1952: The United Kingdom conducts its first nuclear test in Western Australia, code-named Hurricane. November 1, 1952: The United States’ Ivy Mike nuclear test, the first test of a hydrogen bomb, results in a 10 megaton explosion, which obliterates the island of Elugelab in the Enewetak Atoll of the Marshall Islands. 1954: The U.S. Castl...
February 13, 1960: France conducts its first nuclear test explosion in Algeria. February 1960: The Eisenhower administration redoubles its diplomatic efforts by proposing a phased approach to achieving a comprehensive nuclear test ban. The proposal is endorsed by British Prime Minister Harold Macmillan, and with some further modifications, it is po...
Early 1970s: Approximately 150 residents of Bikini Atoll are resettled on their home islands years after U.S. nuclear testing. September 15, 1971: Greenpeace activists sail from Vancouver to Amchitka, Alaska, intent on stopping a scheduled U.S. nuclear test, which fuels further public opposition to testing. Within a year, the United States cancels ...
1981: Fear of nuclear war increases as the Reagan administration embarks on massive nuclear buildup and East-West tensions worsen. A December NBC/Associated Press survey finds that 76 percent of the U.S. public believes that a nuclear war is "likely" within a few years. August 1981: President Ronald Reagan reauthorizes the production of the enhance...
December 11, 1990: The Threshold Test Ban Treaty (TTBT) enters into force. January 1991: The LTBT Amendment Conference convenes, but no decision is made to amend the limited test ban into a comprehensive one because of opposition from the declared nuclear powers. August 29, 1991: The Soviet Semipalatinsk nuclear test site officially closes. In 2009...
June 30, 2000: Russia ratifiesthe CTBT. January 5, 2001: U.S. General John Shalikashvili’s report, “Findings and Recommendations Concerning the Comprehensive Nuclear Test Ban Treaty,” is released after a 10 month-long review of the CTBT following the 1999 Senate rejection of the treaty. Shalikashvili’s report voices strong support for the treaty an...
May 28, 2010: The 2010 Nuclear Nonproliferation Treaty Review Conference concludes, and an agreement is reached on a Final Document, including conclusions and recommendations regarding nuclear testing and the CTBT. February 6, 2012: Indonesia becomes the 36thAnnex 2 state to ratify the CTBT, after signing on September 24, 1996, leaving eight remain...
United States: First boosted nuclear weapon test, first weapon test to employ fusion in any measure. October 3, 1952 Hurricane: 25 United Kingdom: First fission weapon test by the United Kingdom. November 1, 1952 Ivy Mike: 10,400 United States
Sep 20, 2012 · On September 23, 1992, under the surface of the Nevada Test Site, the United States conducted its 1,030th--and last--nuclear weapon test explosion. At the time, there were serious questions about whether the United States could indefinitely extend the service lives of its nuclear warheads without regular nuclear testing.
In March 1954, the United States tested its hydrogen bomb Castle Bravo in the Pacific’s Marshall Islands.
