National Museum of Nuclear Science & History
Zen B. Portwood worked for the J.A. Jones Construction Company.
Andrew Walker was a member of the Special Engineer Detatchment (SED) at Los Alamos during the Manhattan Project.
Norene Mann was a secretary at the University of Chicago Met Lab. She worked for Nobel laureate James Franck, but often also acted as a secretary for Leo Szilard.
Robert L. Stevenson served in the 1027th Air MAterial Squadron.
Mary M. Dailey was a research assistant at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
