National Museum of Nuclear Science & History
L. R. Quinn worked for the Tennessee Eastman Corporation at the Y-12 Plant.
C. J. Klein worked for Clinton Laboratories at the X-10 Reactor.
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.
