National Museum of Nuclear Science & History
Robert Helton worked for the Tennessee Eastman Corporation at the Y-12 Plant.
J. F. Bevis worked for the J.A. Jones Construction Company.
George Ruhl worked for the Kellex Corporation at the K-25 Plant.
William Karush (1917-1997) was an American mathematician and physicist. After earning his Ph.D. from the University of Chicago in 1942, Karush worked briefly at the Carnegie Institution of Washington before returning to Chicago to join the Manhattan Project.