Richard A. Bailey

Helen R. Hughes

Helen R. Hughes was a laboratory technician in the Health Division of the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.

Victor Southerland

Roger I. Harris

George Kistiakowsky

George Kistiakowsky (1900-1982) was a Ukrainian-American physical chemist.  He joined the Manhattan Project in late January 1944, leaving his role as chief of the National Defense Research Committee’s Explosives Division.