National Museum of Nuclear Science & History
Charles Hobson worked for the United States Engineer District Office.
Vanstrum began working on the Manhattan Project soon after receiving his engineering degree from the University of Minnesota.
H. T. Welty, Jr. worked for the Roane-Anderson Company.
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.
