William J. McGraw

Alfred C. Dumrose

E. C. Gunneau

E. C. Gunneau worked for the Edenfield Electric Company.

H. L. Longcrier

H. L. Longcrier worked for the J.A. Jones Construction Company.

Charles Cooper

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