National Museum of Nuclear Science & History
Long worked for Stone and Webster Engineering Corporation.
Hugo Leckelt was a laborer at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
John C. Pennock attended Cornell University, where he studied engineering. He was a member of the Special Engineer Detachment at Oak Ridge, where he worked as a technical engineer at the K-25 Plant.
Frank Neill worked for the Tennessee Eastman Corporation at the Y-12 Plant.