M. A. Hall

Cleo R. Hamman

Harold B. Nilling

Harold B. Nilling was a laboratory helper at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.

Leonard J. Reed

Leonard Reed was a janitor at the Metallurgical Laboratory in Chicago during the Manhattan Project.

I. J. Pardee

I. J. Pardee worked for the Tennessee Eastman Corporation at the Y-12 Plant.