National Museum of Nuclear Science & History
Magdaline Penny worked for the United States Engineer District Office.
Robert Leroy Platzman was a chemist at the University of Chicago Metallurgical Laboratory during World War II.
Dietrich worked in the United States Engineer District.
Mark Fred was a research assistant in the chemistry division of the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Alllen Junkin worked for the J.A. Jones Construction Company.
