National Museum of Nuclear Science & History
Chellis worked for Stone and Webster Engineering Corporation.
Cook worked at the 100-F Area at Hanford during the Manhattan Project.
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.
H. H. Maples worked for the Roane-Anderson Company.