National Museum of Nuclear Science & History
William Ginell is a physical chemist who worked at Columbia University and Oak Ridge during the Manhattan Project.
DePersio worked in the United States Engineer District Office.
Stephen Weber worked at Los Alamos during the Manhattan Project.
Leroy Jackson was transferred into the Manhattan District, the branch of the United States Army Corps of Engineers tasked with overseeing the construction of critical Manhattan Project sites, shortly after its formation in 1942.