National Museum of Nuclear Science & History
F. C. Pullen worked for the Tennessee Eastman Corporation at the Y-12 Plant.
John H. Martens was a research associate and chemist at the University of Chicago Met Lab and a member of the Special Engineer Detachment at Oak Ridge.
Kenneth Stewart Cole was a Principal Biophysicist at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
R. F. Warren worked for the United States Engineer District Office.