National Museum of Nuclear Science & History
Helen Schneider was a staff worker at Los Alamos during the Manhattan Project.
Andrew Kapral served in the 603rd Air Engineering Squadron.
Melvin A. Miller was a draftsman at the University of Chicago Met Lab. In 1946, he sketched two famous drawings of Chicago Pile-1 based on the descriptions of scientists who were present when it went critical.
Luzell Johnson left a factory job in Alabama for a much higher-paying one as a cement finisher at Hanford.