National Museum of Nuclear Science & History
John Leahy worked for the United States Engineer District Office.
Mark Fred was a research assistant in the chemistry division of the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Reuben McCord was a chemist who worked at several Manhattan Project sites. After graduating from Erskine College in South Carolina, he was recruited to work at the University of Chicago Metallurgical laboratory.
Holman worked at the 300 Area at Hanford during the Manhattan Project.