Tokyo. 1945, August 6 At 08:16, the B-29 Enola Gay, piloted by Colonel Paul Tibbets, dropped an atomic bomb containing 60 kg of uranium-235 on Hiroshima Japan, killing an estimated 80,000 civilians outright and perhaps over 200,000 total. 1945, August 9 The B-29 named "Bocks Car" dropped a the bomb, "Fat