Paul C. Schmidtke

A. A. Addison

Addison worked in the United States Engineer District Office.

Ralph Gruber

G. G. Smith

G. G. Smith worked for the Tennessee Eastman Corporation at the Y-12 Plant.

Norris W. Embrey

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