| Mark 12 Nuclear Bomb |
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The Mark-12 Nuclear Bomb was a US designed and manufactured lightweight nuclear bomb which was built starting in 1954 and saw service from then until 1962. For unknown reasons, the design was nicknamed "Brok". The Mark-12 was notable for being a large leap ahead in light weight and physical size compared to prior implosion type nuclear weapons - The overall diameter was only 22 inches, compared to the immediately prior Mark-7 at 30 inch diameter. The comparative volume of the implosion assembly is only 40% as large as the Mark-7's. There was a planned W-12 variant which would have been a nuclear warhead for the RIM-8 Talos missile. The W-12 was cancelled prior to introduction into service. SPECIFICATIONS The complete Mark-12 bomb was 22 inches in diameter, 155 inches long, and weighed 1,100 to 1,200 pounds. It had a yield of 12 to 14 kilotons. FEATURES The Mark-12 has been speculated to have been the first deployed nuclear weapon to have used Beryllium as a reflector-tamper inside the implosion assembly (see Nuclear Weapon Design ). It is believed to use a spherical implosion assembly, levitated pit, and 92-point detonation. APPEARANCE IN FICTION Though the weapon went out of service more than 40 years ago, it resurfaced in a fictional role in Tom Clancy 's 1991 book The Sum Of All Fears , where the book plot included an Israeli copy of the Mark-12 being lost by accident in 1973 during the Yom Kippur War in southern Syria, near the Golan Heights, and then recovered by a terrorist organization. SEE ALSO EXTERNAL LINKS |
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