National Museum of Nuclear Science & History
J. L. Ledgerwood worked for the Tennessee Eastman Corporation at the Y-12 Plant.
W. C. Marr worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Minnie M. Daniels was a laboratory technician and assistant in the Chemistry Division at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Dr. Theron G. Finzel was a chemical engineer/chemist. He worked for DuPont, and was asked to help on the Manhattan Project.