click the pic to see it On Monday, August 6, 1945, at 8:15 AM, the Atomic Bomb " Little Boy " was dropped on Hiroshima by an American B-29 bomber, the Enola Gay , directly killing an estimated 80,000 people. By the end of the year, injury and radiation brought total casualties to 90,000–140,000. Approximately 69% of the city's buildings were completely destroyed, and about 7% severely damaged. Research about the effects of the attack was restricted during the occupation of Japan , and information censored until the signing of the San Francisco Peace Treaty in 1951, restoring control to the Japanese. ( Wikipedia )