National Museum of Nuclear Science & History
C. Perry worked for the Roane-Anderson Company.
M. R. Nason worked for the Union Carbide & Carbon Corporation.
Mark Fred was a research assistant in the chemistry division of the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Opal MacDonald was a stenographer at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
