Assembly of ‘Little Boy’ atomic bomb completed 70 years ago today (July 31 1945)

(Tuesday, July 31, 1945; during Potsdam Conference of World War II) — The atomic bomb nicknamed “Little Boy,” which would become the first atomic bomb to be used in warfare, was assembled today and ready for use against Japan the following day (click here for a clip of this event from “American Experience: Truman” at 2:08:54).

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