National Museum of Nuclear Science & History
Paul Gerhard worked for the Kellex Corporation at the K-25 Plant.
C. W. Knapp worked for the Union Carbide & Carbon Corporation.
James C. Hart was a DuPont chemist and member of the health physics group during the Manhattan Project.
Harold Hasenfus was part of the Special Engineer Detachment during the Manhattan Project and worked at the University of Chicago's Metalurgical Laboratory and at the gaseous diffusion plant in Oak Ridge.
