M. F. Walker

John J. Norton

John J. Norton was a security guard at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.

Robert R. Papp

W. H. MacDonald

W. H. MacDonald worked for the Union Carbide & Carbon Corporation.

E. W. Sutherland

Sutherland worked at the 100-B Area at Hanford during the Manhattan Project.