National Museum of Nuclear Science & History
S. A. Wrightman worked for the Tennessee Eastman Corporation at the Y-12 Plant.
A. H. Caldwell worked for the G.G. Ray Company.
Opal MacDonald was a stenographer at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Arthur S. Olson was a laborer at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
