National Museum of Nuclear Science & History
Zen B. Portwood worked for the J.A. Jones Construction Company.
J. A. Elkins worked for the Edenfield Electric Company.
Blanche J. Lawrence was an African-American research assistant in the Health Division of the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
M. C. Ferguson worked for the Tennessee Eastman Corporation at the Y-12 Plant.
