National Museum of Nuclear Science & History
C. L. McCallum worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Olga M. Klicek was a laboratory technician in the Health Division of the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Williamson worked at the 300 Area at Hanford during the Manhattan Project.
Alfred “Al” Wiora served in the army at Los Alamos during the Manhattan Project. He studied at the University of Pennsylvania and later worked at the Hughes Aircraft Company in Tuscon, Arizona.