R.C. Sievers

David Kelch

Henry Stimson

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.

Egan Bretscher

Bretscher worked at Los Alamos during the Manhattan Project.

K. G. Noyinger