Gerald L. Constable

J.F. Sally

Norris W. Embrey

Norris W. Embrey was a laboratory assistant at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.

M. E. Brennan

M. E. Brennan worked for the Watson-Flagg Engineering Company.

Arthur Garry

Arthur Garry worked for the Midwest Piping and Supply Company.