Andrew J. Sevic Jr.

S. J. Helfman

S. J. Helfman worked for the J.A. Jones Construction Company.

Edward P. Hayes

Edward P. Hayes was a laboratory assistant at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.

G. L Varvel

R. O. Mitchell

R. O. Mitchell worked for the Roane-Anderson Company.