National Museum of Nuclear Science & History
R. K. Dean worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Hugo Leckelt was a laborer at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
J. C. Hecker worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Mary Whidden was a staff worker at Los Alamos during the Manhattan Project.