Complete List of All U.S. Nuclear Weaponshttp://nuclearweaponarchive.org/Usa/Weapons/Allbombs.htmlNuclear Weapon Database:
United States Arsenalhttp://www.cdi.org/nuclear/database/usnukes.htmlU.S. Nuclear Weapon Enduring Stockpile
Last changed 31 August 2007
The U.S. nuclear arsenal is divided into three levels of stockpile readiness. These are:
* Operationally Deployed: These are active stockpile (fully operational) weapons and mated with delivery systems such that they are ready to be used in combat. All warheads counted under arms limitation agreements belong to this category.
* Active Stockpile: Fully operational weapons, available for immediate use, whether or not they are operationally deployed. Reasons for an active stockpile weapon to not be operationally deployed include:
o Its assigned to a delivery system is not currently operational (in particular ballistic missile submarines spend one-third of their time not on patrol),
o It is a spare for deployed warheads (should a deployed warhead require maintenance, for example), and
o It is part of the responsive force -- an inventory of warheads that are kept in operational condition (tritium reservoirs installed, etc.) to permit immediate deployment (for example to upload the number of wartheads on a ballistic missile, or reloads for bomber aircraft).
* Inactive Reserve: Weapons that are kept intact, but are not maintained in operational condition. This means that limited life components are removed from the weapons and may not be available to immediately return them to service. "Limited life components" principally mean tritium-containing components such as tritium reservoirs and neutron generator tubes. Some weapons currently in this category (e.g. the W84) will be dismantled.
At the beginning of 2007 the U.S. nuclear arsenal was composed of eight types of nuclear warheads (in thirteen variant mods) that are operationally deployed, with an estiamted count of 5,736 active stockpile warheads. For the first time the 2007 Annual Report on Implementation of the Moscow Treaty listed the aggregate number of U.S. operationally deployed strategic nuclear warheads which as of 31 December 2006 stood at 3,696. No official breakdown of this number is available, however if one assumes that ICBMs have 95% availability, 66% of SLBMs are on patrol, and 90% of bombers are on-duty with their full combat load, then this tally exactly matches the offical operational count.
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http://nuclearweaponarchive.org/Usa/Weapons/Wpngall.html
50 Facts About U.S. Nuclear Weapons
The U.S. Nuclear Weapons Cost Study Project was completed in August 1998 and resulted in the book Atomic Audit: The Costs and Consequences of U.S. Nuclear Weapons Since 1940 edited by Stephen I. Schwartz. These project pages should be considered historical.
- Except where noted all figures are in constant 1996 dollars -
1. Cost of the Manhattan Project (through August 1945): $20,000,000,000
SOURCES: Richard G. Hewlett and Oscar E. Anderson, Jr., The New World: A History of the United States Atomic Energy Commission, Volume 1, 1939/1946 (Oak Ridge, Tennessee: U.S. AEC Technical Information Center, 1972), pp. 723-724; Condensed AEC Annual Financial Report, FY 1953 (in Fifteenth Semiannual Report of the Atomic Energy Commission, January 1954, p. 73)
2. Total number of nuclear missiles built, 1951-present: 67,500
U.S. Nuclear Weapons Cost Study Project
3. Estimated construction costs for more than 1,000 ICBM launch pads and silos, and support facilities, from 1957-1964: nearly $14,000,000,000
Maj. C.D. Hargreaves, U.S. Army Corps of Engineers Ballistic Missile Construction Office (CEBMCO), "Introduction to the CEBMCO Historical Report and History of the Command Section, Pre-CEBMCO Thru December 1962," p. 8; U.S. Army Corps of Engineers Ballistic Missile Construction Office, "U.S. Air Force ICBM Construction Program," undated chart (circa 1965)
4. Total number of nuclear bombers built, 1945-present: 4,680
U.S. Nuclear Weapons Cost Study Project
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http://www.brookings.edu/projects/archive/nucweapons/50.aspx