National Museum of Nuclear Science & History
Harold Riley was an American chemical engineer. After graduating from North Carolina State College, Riley began his career working as a rayon technician at the DuPont Company.
Smith worked at the 100-D Area at Hanford during the Manhattan Project.
James C. Hart was a DuPont chemist and member of the health physics group during the Manhattan Project.
J. G. Ayre worked for the J.A. Jones Construction Company.