Jas R. Orton

Cyril D. Curtis

Philip C. McKenna

Philip C. McKenna was a laboratory assistant the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.

Lucien Nerman

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

W. J. Cummins

Cummins worked for Stone and Webster Engineering Corporation.