National Museum of Nuclear Science & History
Roy V. Henderson was a janitor at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Dorothy C. Johnson was a stenographer at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Charles O’Neil was a staff worker at Los Alamos during the Manhattan Project.
W. M. Salminen worked for the Tennessee Eastman Corporation at the Y-12 Plant.
