Robert T. Hassel

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.

Walter Zinn

Walter Zinn (1906-2000) was a Canadian-American nuclear physicist. Zinn was born in Kitchener, Ontario, in 1906 and graduated from Queens University in 1927.

John J. Miller

Richard D. Strickland

Richard Strickland was a staff worker at Los Alamos during the Manhattan Project.