Little Boy, the atomic bomb that destroyed Hiroshima

61-55 (untitled)
Accession Number
8x10 inches (21x26 cm)
Black & White
Related Collection
HST Keywords
Atomic Bomb - "Little Boy"; Hiroshima - Atomic Bomb

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Harry S. Truman Library & Museum.

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