National Museum of Nuclear Science & History
B. B. Pewitt worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Conce Vigil was a staff worker at Los Alamos during the Manhattan Project.
John O. Barker served in the 320th Troop Carrier Squadron.
Ralph Alexander Gardner-Chavis (1922-) is a chemist and pioneer of hard plastics who worked at the University of Chicago’s Met Lab during the Manhattan Project.
Joseph Caldwell was a security guard at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
