Little Boy was the type of bomb dropped on Hiroshima the morning of August 6, 1945. This reworking of the unsuccessful Thin Man design, that originally used plutonium-239, operated through the nuclear fission of uranium-235. It was created in the Los Alamos Lab of the Manhattan Project, and was manufactured in three different plants to prevent anyone from having the entirety of the designs. The name Little Boy was an allusion to the name of Thin Man, which was a reference to The Thin Man, the detective novel by Dashiel Hammet. Little Boy weighed 9,000 pounds and was only 28 inches in diameter, yet exploded with the force of approximately 15 kilotons of TNT when it was dropped untested on the city of Hiroshima. This was the second man-made nuclear explosion following the Trinity nuclear test, and the start of the end of WWII.
Interested in World War II history?
Learn all about the inspiration behind our Allied Brewing Company family of beers. Each label represents a historic event or icon from this period that we're proud to share with you.