National Museum of Nuclear Science & History
Desiderio Vigil was a staff worker at Los Alamos during the Manhattan Project.
R. F. Ridgeway worked for the Roane-Anderson Company.
Robert O. Nohr was a laborer at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Celeste Hand was a switchboard operator at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
