Declassified Stockpile Data 1945 to 1994

Summary of Declassified Nuclear Stockpile Information

United States Department of Defense and Department of Energy


Declassified Stockpile Data 1945 to 1994

Total quantities cover years 1945 to 1961. Total quantities 1945-1948 werealreadyunclassified. Total quantities of the stockpile after 1961 remain classifiedsince therewere weapon systems introduced in 1962 and later that are still in the currentstockpile.

Builds numbers reported below are total annual quantities for fully retiredweaponsystems. This represents a subset of United States nuclear weapon production.Theannual production of nuclear weapons still in the stockpile remain classified.

Retirement rates from 1984 to 1989 are adjusted from the stockpile memorandumretirement numbers to better reflect the number of weapons truly retired.Retirementnumbers reported below reflect weapons retired for conversions, modifications,ordisassemblies for disposal. Retirement numbers depend critically on how thetermretirement is defined.

Disassemblies reported below reflect only the number of weapons dismantled foractualdisposal. It should be noted that raw disassembly numbers published elsewhereby theDepartment are typically larger reflecting the number of times a weapon isdisassembled but not necessarily disassembled for disposal or dismantlementpurposes. An example of this would be for repair, a weapon might bedisassembled toreplace a part and then returned to the stockpile. Records prior to 1980 ondisassemblies for disposal are not immediately available but will be providedin thefuture if possible.

YEAR   TOTAL   MEGATONNAGE   BUILDS   RETIREMENTS  DISASSEMBLIES1945       2        0.04         2           01946       9        0.18         7           01947      13        0.26         4           01948      50        1.25        43           61949     170        4.19       123           31950     299        9.53       264         1351951     438       35.25       284         1451952     841       49.95       644         2411953    1169       72.80       345          171954    1703      339.01       535           11955    2422     2879.99       806          871956    3692     9188.65      1379         1091957    5543    17545.86      2232         3811958    7345    17303.54      2619         8171959   12298    19054.62      7088        21351960   18638    20491.17      7178         8381961   22229    10947.71      5162        15711962            12825.02      4529         7661963            15977.17      3185         8301964            16943.97      3493        25341965            15152.50      3519        19361966            14037.46      2429        23571967            12786.17      1693        16491968            11837.65       536        21941969            11714.44       684        30451970             9695.20       219        19361971             8584.40      1073        13471972             8531.51      1546        15411973             8452.00      1171         5441974             8325.22       959         8071975             7368.38       748        22401976             5935.51       427        21811977             5845.0        221         9981978             5721.16        50        11481979             5696.34       170         7301980             5618.86         0         904        7321981             5382.91        30        1887       15771982             5358.89       338        1537       15351983             5232.47       217         749       11201984             5192.20       187        1143        9941985             5217.48       195        1322       10751986             5414.54       140        1224       10151987             4882.14         0         958       11891988             4789.77         0        1023        5811989             4743.34         0        1794       12081990             4518.91         0                   11541991             3795.94         0                   15951992             3167.88         0                   18561993             2647.31         0                   15561994             2375.30         0                    926 as of April

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