J. F. Donnelly

Okey B. Ellison

Okey B. Ellison was a security guard at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.

Mary Kelly

Mary Kelly was a stenographer at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.

R. G. Cooper

R. G. Cooper worked for the Union Carbide & Carbon Corporation.

Howard M. Hibler