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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 ...
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.
These tests include 904 at the Nevada Test Site, 106 at the Pacific Proving Grounds and other locations in the Pacific, 3 in the South Atlantic Ocean, and 17 other tests taking place in Amchitka Alaska, Colorado, Mississippi, New Mexico and Nevada outside the NNSS (see Nuclear weapons and the United States for details). 24 tests are classified ...
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
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 ...
The resumption of testing by the world's two biggest nuclear powers would usher in a new and precarious era nearly 80 years since the United States tested the first nuclear bomb at Alamogordo, New ...
The pre-Hiroshima nuclear history of the United States began with the Manhattan Project.This Manhattan Project was the nuclear program for warfare. Even before the first nuclear weapons had been developed, scientists involved with the Manhattan Project were divided over the use of the weapon.