H. C. Grundmann

Lomie F. Caho

Lomie F. Caho was a security guard at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.

Paul Tinsley

Paul Tinsley worked for the H. K. Ferguson Company.

A. W. Betts

Colonel Austin Wortham “Cy” Betts worked under General Kenneth D. Nichols during the Manhattan Project.

Wallace Conway