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  • August 6, 1945 - The world’s second atomic bomb, Little Boy, a gun-type uranium bomb, is detonated 1,900 feet above Hiroshima, Japan. It has a yield of approximately 15 kilotons TNT. Some 90,000 to 100,000 persons are killed immediately; about 145,000 persons would perish from the bombing by the end of 1945.
  • August 9, 1945 - At 11:02 a.m. the world’s third atomic bomb explosion devastates Nagasaki, the intense heat and blast indiscriminately slaughters its inhabitants.
  • August 29, 1949 - The Soviet Union detonates its first atomic bomb, Joe 1 (10-20 kilotons), at Semipalatinsk in Kazakhstan. August 29 is now known as the International Day Against Nuclear Tests.
  • August 29, 2007 - Six nuclear-armed missiles without any special guard are loaded onto a B52 bomber and transported from the Minot Air Force Base in North Dakota to the Barksdale Air Force Base in Louisiana. The weapons lacked special guard for more than thirty-six hours until the Air Force realizes its mistake.
  • August 31, 1946 - Hiroshima by John Hersey is published in the New Yorker magazine. It takes up the entire issue, revealing the horrors of atomic war to the American public.
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