National Museum of Nuclear Science & History
Hugo Leckelt was a laborer at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
John Black worked for the J.A. Jones Construction Company.
Ernest M. Bahor was a chemist. He graduated from the University of Detroit. He was a member of the Special Engineer Detachment and worked at the K-25 Plant in Oak Ridge during the Manhattan Project.
Donald D. Piehl served as a corporal in the 393rd Bombardment Squadron. He was a member of the ground crew regularly assigned to the B-29 Big Stink, and he and his crew were later reassigned to Luke the Spook.