National Museum of Nuclear Science & History
H. A. McFadden worked for the Roane-Anderson Company.
As Secretary of War under Presidents Franklin D. Roosevelt and Harry Truman, Henry L. Stimson (1867-1950) oversaw the entire Manhattan Project, and was responsible for appointing key project leaders and authorizing project construction sites across the US.
C. E. Lawrence worked for the Oak Ridge Recreation and Welfare Association.