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First nuclear weapons test, conducted as part of the Manhattan Project. Tested the Mark 3 Fat Man design. Crossroads: 1946 2: 2: 2: 21 42: First postwar test series. Sandstone: 1948 3: 3: 3: 18 to 49 104: The first use of "levitated" cores made of oralloy. Tested components for Mark 4 design. Ranger: 1951 5: 5: 5: 1 to 22 40: First tests at the ...
The standard official list of tests for American devices is arguably the United States Department of Energy DoE-209 document. [5] 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:
Greenwater, a Lawrence Livermore test, was to be fired in Area 19, [10] and was a test of an x-ray laser system. [12] The test was cancelled 16 July 1992. [13] The Greenwater nuclear device had already been assembled at the time of cancellation, and had to be dismantled. [14] A fourth test, Mighty Uncle, was planned for 1993.
The effects of an underground nuclear test may vary according to factors including the depth and yield of the explosion, as well as the nature of the surrounding rock. [25] If the test is conducted at sufficient depth, the test is said to be contained, with no venting of gases or other contaminants to the environment. [25]
The United States's Touchstone nuclear test series was a group of 13 nuclear tests conducted in 1987–1988. These tests [ note 1 ] followed the Operation Musketeer series and preceded the Operation Cornerstone series.
The United States's Emery nuclear test series [1] was a group of 16 nuclear weapons tests conducted in 1970 and 1971. These tests [ note 1 ] followed the Operation Mandrel series and preceded the Operation Grommet series.
Operation Hardtack II [1] was a series of 37 nuclear tests conducted by the United States in 1958 at the Nevada Test Site. These tests followed the Operation Argus series and preceded the Operation Nougat series. With test moratoriums on the horizon, American weapons labs rushed out many new designs.
The chief milestone of Operation Sunbeam was that it was the last nuclear test series on the Nevada Test Site conducted in the atmosphere by the United States. Since Operation Sunbeam , specifically the Little Feller 1 test of the Davy Crockett, all US nuclear tests on the Test Site have been carried out underground in accordance with the ...