National Museum of Nuclear Science & History
Ernest Zurcher worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Butler worked at the 300 Area at Hanford during the Manhattan Project.
Samuel Beall Jr. is a nuclear engineer who worked on the Manhattan Project at Chicago, IL, Oak Ridge, TN, and Hanford, WA.
Joseph Levinger was a research associate at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.