Little Boy

Weight: 9700 lbs.

Length: 120 inches

Diameter: 28 inches

 

The first atomic bomb dropped on Hiroshima on August 6th, 1945, by the Enola Gay (B-29 Bomber).  First atomic bomb used as a weapon. The explosive power came from the use of Uranium-235.  It was a gun type bomb and was never tested before it was dropped on Hiroshima; they assumed it would work.