National Museum of Nuclear Science & History
J. J. De Groot worked for the J.A. Jones Construction Company.
Ratterman worked at the 200 East area at Hanford during the Manhattan Project.
Acie Singleton was a laborator helper at the Metallurgical Laboratory in Chicago during the Manhattan Project.
Leo Perreault worked for the United States Engineer District Office.
Bertrand Goldschmidt was a French chemist, who worked at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
