National Museum of Nuclear Science & History
S. W. Barnes worked for the Tennessee Eastman Corporation at the Y-12 Plant.
John Crawford was a physicist and research assistant at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Coullard worked in the United States Engineer District Office.
Conce Vigil was a staff worker at Los Alamos during the Manhattan Project.
Leo P. Hassen was a security guard at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
