USAF Museum, Dayton, OH - WWII - Bocks Car Boeing B-29 Superfortress / 14 Little Boy Atomic Bomb
Bill Maloney
10/20/2006

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14 Little Boy Atomic Bomb

14 Little Boy Atomic Bomb

Little Boy Atomic Bomb (Mk I Series):

Little Boy Atomic Bomb casing
Another Little Boy Atomic Bomb casing can be found at the US Air Force Museum in Dayton, OH

Length: 120 inches
Diameter: 28 inches
Weight: 8,900lbs
Weight of Fissionable Uranium-235: 141lbs, 1.5lbs of which actually fissioned
Explosive Yield: 15-16 kilotons
Configuration: Gun type heavy uranium bomb
Delivery Method: Boeing B-29 Superfortress Enola Gay
Est. # of Mk 1 Atomic Bombs Produced: 5
Target: Hiroshima, Japan
Delivery Date: August 6, 1945 8:15am JSP

This is an empty bomb casing of the Mk I or Little Boy series of atomic bombs. About 5 were produced in the series and when they were deemed obsolete the fissionable Uranium 235 was removed along with the triggering explosives. The casings were then either scrapped or distributed to other museums.

Here is a link to a page showing wartimes photos of the Little Boy gun type uranium atomic bomb being prepared for loading into the B-29 Enola Gay.