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thumb Edward Bernard Grothus (June 28, 1923 – February 12, 2009) was an American machinist and technician at the Los Alamos National Laboratory during the 1950s and 1960s.〔(The Black Hole of Los Alamos ): Wired.com website.〕 In later life he became the owner of a surplus store which he used as a base for peace and anti-nuclear activism.〔(Fear and Fallout in Los Alamos ): Mother Jones website.〕 ==Weapons specialist== Originally, Grothus built rifles and machine guns at the Rock Island Arsenal in Illinois.〔( Ed Grothus And The Doomsday Stones ): ''MyWire'' website.〕 He arrived in Los Alamos on March 23, 1949.〔〔(Anti-nuke activist works for new legacy for birthplace of A-bomb ): Kyodo News website.〕 Initially, Grothus worked for 2 years as a machinist and then 18 years as a technician in the R-Site weapons development group. This involved working with depleted uranium and taking measurements for studies on the hydrodynamics of test implosions. He said his work contributed to the creation of bombs 30 times smaller and 30 times more powerful than those used on Hiroshima and Nagasaki—an increase from 15 kilotons to 475 kilotons in a nuclear package the size of a bowling ball.〔 On December 1, 1969〔 Grothus quit the lab to pursue his business and activism interests full-time. 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「Ed Grothus」の詳細全文を読む スポンサード リンク
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