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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. [1] [notes 1] Most of the tests took place at the Nevada Test Site (NNSS/NTS) and the Pacific Proving ...
Template: Graphical timeline of United States atmospheric nuclear weapons tests. ... Graphical timeline of United States atmospheric nuclear weapons tests.
The United States conducted around 1,054 nuclear tests (by official count) between 1945 and 1992, including 216 atmospheric, underwater, and space tests. [9] Some significant tests conducted by the United States include: Shot "Baker" of Operation Crossroads (1946) was the first underwater nuclear explosion.
The United States opened the nuclear era in July 1945 with the test of a 20-kiloton atomic bomb at Alamogordo, New Mexico, in July 1945, and then dropped atomic bombs on the Japanese c
1992 – The U.S. Senate votes for a nuclear testing moratorium despite opposition from President George HW Bush and Defense Secretary Dick Cheney. [6] [89] Operation Julin is the final American weapons test, and also ends British nuclear testing in the United States. 1992 – France's nuclear stockpile peaks at over 500 warheads. [54]
The Trinity test of the Manhattan Project was the first detonation of a nuclear weapon. The United States first began developing nuclear weapons during World War II under the order of President Franklin Roosevelt in 1939, motivated by the fear that they were engaged in a race with Nazi Germany to develop such a weapon.
From the first nuclear test in 1945, worldwide nuclear testing increased rapidly until the 1970s, when it peaked. [24] However, there was still a large amount of worldwide nuclear testing until the end of the Cold War in the early 1990s. [24] Afterwards, the Comprehensive Test Ban Treaty was signed and ratified by the major nuclear weapons ...
On this day in 1957, the first underground nuclear test was carried out at the Nevada Test Site, a 1,375 square-mile research center located 65 miles away from Las Vegas.The 1,7 kiloton nuclear ...