National Museum of Nuclear Science & History
H. L. Ray worked for the Kellex Corporation at the K-25 Plant.
H. W. Dube served in the 390th Air Service Group.
Joseph Levinger was a research associate at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Margaret M. Emmerson was a technician at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
