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The United States was the first nation to develop the hydrogen bomb, testing an experimental prototype in 1952 ("Ivy Mike") and a deployable weapon in 1954 ("Castle Bravo"). Throughout the Cold War it continued to modernize and enlarge its nuclear arsenal, but from 1992 on has been involved primarily in a program of stockpile stewardship .
The United States is one of the five nuclear weapons states with a declared nuclear arsenal under the Treaty on the Non-Proliferation of Nuclear Weapons (NPT), of which it was an original drafter and signatory on 1 July 1968 (ratified 5 March 1970). All signatories of the NPT agreed to refrain from aiding in nuclear weapons proliferation to ...
The components of a B83 nuclear bomb used by the United States. This is a list of nuclear weapons listed according to country of origin, and then by type within the states. . The United States, Russia, China and India are known to possess a nuclear triad, being capable to deliver nuclear weapons by land, sea and
Formerly known as Christmas Island (the Pacific one, not the one in the Indian Ocean) Kiritimati was used as an air base for bombers dropping nuclear tests mostly south of the island. It hosted most of the Operation Dominic drops as well as most of Britain's Operation Grapple. Nevada National Security Site (formerly known as Nevada Test Site, NTS)
The United States is known to have possessed three types of weapons of mass destruction: nuclear, chemical, and biological weapons.As the country that invented nuclear weapons, the U.S. is the only country to have used nuclear weapons on another country, when it detonated two atomic bombs over two Japanese cities of Hiroshima and Nagasaki during World War II.
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 Grounds in the Marshall Islands and off Kiritimati Island in the Pacific, plus three in the Atlantic Ocean.
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:
Project 57 was an open-air nuclear test conducted by the United States at the Nellis Air Force Range in 1957, [1] [2] following Operation Redwing, and preceding Operation Plumbbob. The test area, also known as Area 13 , was a 10 miles (16 km) by 16 miles (26 km) block of land abutting the northeast boundary of the Nevada National Security Site .