Homer S. Caldwell

C. E. Poehlein

V. Flagg

V. Flagg worked for the Watson-Flagg Engineering Company.

Warren H. Burgus

Warren H. Burgus was a research assistant in the Metallurgical Laboratory (“Met Lab”) at the University of Chicago during the Manhattan Project.

C. H. Lawson

C. H. Lawson worked for the Roane-Anderson Company.