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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 .
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 .
The first target of nuclear weapons, the Mark I atomic bomb. The target was the Aioi Bridge across the Ōta River ; it exploded several hundred yards off. Hiroshima was a city of 250,000, suffering 70,000 or so deaths immediately and up to 126,000 by the end of the year.
A graph showing the amount of nuclear weapons stockpiled by either country during the nuclear race. U.S. ground-based nuclear weapons (all LGM-30 Minuteman missiles) are deployed in three areas, spanning five states. These locations were chosen to be far away from the coasts, to maximize warning of an incoming attack from submarines; far away ...
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 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 air.
Operation Nougat [1] was a series of 44 nuclear tests conducted (with one exception) at the Nevada Test Site in 1961 and 1962, immediately after the Soviet Union abrogated a testing moratorium, with the US' Mink test shot taking place the day before the Soviets test-detonated the Tsar Bomba.