National Museum of Nuclear Science & History
Joseph Leopold worked for the Kellex Corporation at the K-25 Plant.
Louis Turner was a metallurgical engineer who worked on the Manhattan Project. He first became involved with the Manhattan Project at the University of Chicago in 1943.
Roger Hildebrand is an American physicist and Manhattan Project veteran. He is the S.K. Allison Distinguished Service Professor, Emeritus, at the University of Chicago and is affiliated with the Enrico Fermi Institute.