National Museum of Nuclear Science & History
Mary Elizabeth Barnes was a radiochemist working in the Y-12 Plant in Oak Ridge, Tennessee from 1946 to 1952.
Dr. Theron G. Finzel was a chemical engineer/chemist. He worked for DuPont, and was asked to help on the Manhattan Project.
Betty Mokstad was a laboratory technician in the Chemistry Division at the University of Chicago Met Lab.
