National Museum of Nuclear Science & History
George Meacham worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Harry Petcher's flat feet meant he couldn't be drafted, but still had an obligation to work for the war effort.
Melvin A. Miller was a draftsman at the University of Chicago Met Lab. In 1946, he sketched two famous drawings of Chicago Pile-1 based on the descriptions of scientists who were present when it went critical.
G. M. Lyle worked for the Tennessee Eastman Corporation at the Y-12 Plant.