J. P. Grizzell

Ambroso Hoelscher

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

H. C. Rawls

H. C. Rawls worked for the Tennessee Eastman Corporation at the Y-12 Plant.

Harold P. Smith

Harold Smith worked for the Kellex Corporation at the K-25 Plant.

Martin C. Jones