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The Mark 8 nuclear bomb was a nuclear bomb, designed in the late 1940s and early 1950s, which was in service from 1952 to 1957. == Description == The Mark 8 was a gun-type nuclear bomb, which rapidly assembles several critical masses of fissile nuclear material by firing a fissile projectile or "bullet" into a hollow opening in a larger fissile "target", using a system which closely resembles a medium-sized cannon barrel and propellant. The Mark 8 was an early earth-penetrating bomb (see nuclear bunker buster), intended to dig into the earth some distance prior to detonating. According to one government source, the Mark 8 could penetrate of reinforced concrete, of hard sand, feet of clay, or of hardened armor-plate steel. 〔 (Weapon Design: We've done a lot but we can't say much ) by Carson Mark, Raymond E. Hunter, and Jacob E. Weschler, Los Alamos Science, Winter/Spring 1983, pp 159. 〕 The Mark 8 was in diameter across its body and long depending on submodel. It weighed , and had a yield of 25-30 kilotons. A total of 40 Mark 8 bombs were produced. The Mark 8 was succeeded by an improved variant, the Mark 11 nuclear bomb. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Mark 8 nuclear bomb」の詳細全文を読む スポンサード リンク
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