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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.
Sep 23, 2018 · 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 country...
Castle Bravo shot of 1 March 1954, was the first test of a deployable (solid fuel) thermonuclear weapon, and also (accidentally) the largest weapon ever tested by the United States (15 megatons). It was also the single largest U.S. radiological accident in connection with nuclear testing.
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.
Jul 16, 2020 · The US ended all underground nuclear tests in the early 1990s in the lead-up to the Comprehensive Nuclear Test Ban Treaty, despite protests from the heads of the nation’s three national...
Dec 1, 2023 · On September 24, 1996, the United States was the first nation to sign the CTBT, which prohibits all nuclear weapon test explosions or other nuclear explosions, but the Senate rejected ratification in 1999 and the treaty has yet to enter into force. In recent years, international support for the CTBT has grown.
The test, designed and executed by scientists at Los Alamos National Laboratory, was the nation’s 1,054th and final nuclear weapons test before the current testing moratorium, marking the end of an era that began with the Trinity test 47 years prior.
