Jackson M. Clement

J. O’Conner

J. O'Conner worked for the Midwest Piping and Supply Company.

E. P. Garrigan

J. E. Grumbach

J. E. Grumbach worked for the Edenfield Electric Company.

Victor C. Hamister

Victor C. Hamister was a consultant to the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.