Martin J. Morrison

Frank Karcher

Sergeant Frank Karcher was a security guard at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.

S. B. Spracklen

S. B. Spracklen worked for the Union Carbide & Carbon Corporation.

Hayden J. Myers

J. D. Hayes

J. D. Hayes worked for the Tennessee Eastman Corporation at the Y-12 Plant.