nuclear weapons test, “Trinity,” conducted at Alamogordo, New Mexico on July 16, 1945. Yield (in kilotons of TNT) of the first U.S. Four other submarines of the Ohio-class have been converted to carry conventionally-armed cruise missiles in place of SLBMs. Typically, at any one time two of these submarines are in long-term overhaul, meaning that 12 are normally operationally available. Number of Ohio-class ballistic missile submarines maintained by the U.S. ICBMs if he wanted to exercise a launch-under-attack option.
3Įstimated amount of time (in minutes) that the president would have to make a decision regarding the launch of U.S. nuclear bombs lost in accidents and never recovered. hydrogen device, detonated at Eniwetok Atoll, the Marshall Islands, on November 1, 1952. Yield (measured in megatons of TNT) of “Mike,” the first U.S. Number of Minuteman III ICBMs controlled by a launch crew. Under the “3+2” plan, it is proposed over time to reduce the warhead types to three warheads for ballistic missiles, one gravity bomb (B61) and one warhead for ACLMs.Īmount (in kilograms) of plutonium needed for a nuclear weapon, as estimated by the International Atomic Energy Agency (IAEA). arsenal: W76 and W88 warheads for submarine-launched ballistic missiles (SLBMs) W78 and W87 warheads for intercontinental ballistic missiles (ICBMs) W80 warheads for the air-launched cruise missile (ALCM) and B61 (multiple variants) and B83 gravity bombs. Number of nuclear weapon types in the current U.S. non-strategic nuclear weapons: Belgium, Germany, Italy, the Netherlands and Turkey. Number of countries believed to host U.S. Number of formally recognized nuclear weapons states under the 1968 Nuclear Non-Proliferation Treaty: the United States, Russia, United Kingdom, France and China. Number of states that are home to Minuteman III missile launch sites (Colorado, Montana, Nebraska, North Dakota and Wyoming). Neither bomb detonated, but each had a yield of 3.8 megatons the detonation of one would have been some 260 times more powerful than the weapon dropped on Hiroshima. Air Force B-52 that broke up in midair over Goldsboro, North Carolina. Number of Mark 39 hydrogen bombs that were accidently released in 1961 from a U.S. nuclear weapons used in wartime, against Hiroshima on Augand Nagasaki on August 9, 1945.
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