John Cron

J. C. Campbell

J. C. Campbell worked for the Union Carbide & Carbon Corporation.

Ambroso Hoelscher

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

Charles P. Blaise

H. T. Hunsicker

H. T. Hunsicker worked for the Midwest Piping and Supply Company.