National Museum of Nuclear Science & History
C. R. Frazier worked for the Poe Piping & Heating Company.
Dr. Theron G. Finzel was a chemical engineer/chemist. He worked for DuPont, and was asked to help on the Manhattan Project.
K. J. Walters worked for the Roane-Anderson Company.
J. A. Armitage worked for the Union Carbide & Carbon Corporation.