National Museum of Nuclear Science & History
H. B. Smith worked for the United States Engineer District Office.
Carl Helrich (1895-1971) was a civil engineer for the J.A. Construction Company from 1943 to 1945 and helped construct the Oak Ridge town site and plant area.
John D. Hopper served as a civilian in Project Alberta.
Calhoun worked at the 100-B Area at Hanford during the Manhattan Project.
