National Museum of Nuclear Science & History
George Ruhl worked for the Kellex Corporation at the K-25 Plant.
Charles W. Hagen was a research assistant at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Frances "Fran" Carroll worked as an operator, supervisor, and research assistant in the Columbia University Laboratory and at Oak Ridge, Tennessee.
Jose Romero was a staff worker at Los Alamos during the Manhattan Project.
