William F. Sturm

Theodore Hall

Theodore “Ted” Hall (1925-1999) was an American physicist and an atomic spy who passed along detailed information about the implosion-type “Fat Man” bomb and several processes for purifying plutonium to the Soviet Union.

Harry A. Daggers

Henry Robert Barwick

Henry Barwick worked as a plumber, pipefitter, and steamfitter during the building of the Y-12 plant at Oak Ridge.

Alan E. Florin

Alan E. Florin was a research associate in the Chemistry Division of the University of Chicago’s Metallurgical Laboratory during the Manhattan Project.