Christopher F. Schroeder, Jr.

Frank A. Alexander

Frank Alexander worked for Clinton Laboratories at the X-10 Reactor.

Chester A. McConaghy

Jack L. Callan

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

W. F. Boldridge

W. F. Boldridge worked for Clinton Laboratories at the X-10 Reactor.