John D. Strong

A. E. Whiteside

Jack L. Callan

Jack L. Callan was a laborer at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.

Peter D. Korzaan

Peter Korzaan served the Manhattan Project in the Provisional Engineering Detachment (PED) at Los Alamos from 1945 to 1946.

Walter G. Johnson

Walter Johnson worked for the United States Engineer District Office.