W. R. Clarkson

Edith Levin

Edith Levin worked for the United States Engineer District Office.

Walter R. Julek

Walter R. Julek was a laboratory helper at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.

H.L. Smith

William S. Ginell

William Ginell is a physical chemist who worked at Columbia University and Oak Ridge during the Manhattan Project.