Kenneth P. Seltzer

J. E. Grumbach

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

Robert Martens

Robert Martens was a research associate at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.

W. W. Hazlett

W. W. Hazlett worked for the Fercleve Corporation.

Harry R. Haney