National Museum of Nuclear Science & History
H. E. Armstrong worked for the Tennessee Eastman Corporation at the Y-12 Plant.
H. L. Nussmeyer worked for the United States Engineer District Office.
Mary Tinsley was a laboratory techinician in the Health Division at the Metallurgical Laboratory in Chicago during the Manhattan Project.
Otto Hillig was a Danish machinist who helped work on various projects in the early days of the Manhattan Project.
Clement worked at Los Alamos during the Manhattan Project.