Hiroshima-shi (Japan) bombardment, 1945

Aerial view of Hiroshima, showing atomic bomb damage. From an album created by the Allied Reparations Committee, headed by Ambassador Edwin W. Pauley, 1945-47.

Aerial view of Hiroshima showing damage from atomic bomb. From an album created by the Allied Reparations Committee, headed by Ambassador Edwin W. Pauley, 1945-47.

Nuclear weapon of the "Little Boy" type, the kind detonated over Hiroshima, Japan, in World War II. The bomb is 28 inches in diameter and 120 inches long. The first nuclear weapon ever detonated, it weighed about 9,000 pounds and had a yield equivalent to approximately 20,000 tons of high explosive.

Area of devastation by the atomic bombing of Hiroshima, Japan.