John C. Delmar, Jr.

Philip C. McKenna

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

Leonard Krouldis

Leonard Krouldis was a laboratory helper at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.

C. H. Everett

C. H. Everett worked for the Comstock-Bryant Electric Company.

Robert D. Rupert