National Museum of Nuclear Science & History
O. N. Hall worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Ernest Capell worked for the Poe Piping & Heating Company.
J. B. Kaiser worked for the Midwest Piping and Supply Company.
Andrew H. MacMahon was the Chief Property Officer of the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
