O. C. Hardigg

E. E. Minett

E. E. Minett worked for the Union Carbide & Carbon Corporation.

Hazel V. Teeter

Hazel Teeter worked for the United States Engineer District Office.

Charles E. Holstein

James McIntosh

James McIntosh was a draftsman at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.