National Museum of Nuclear Science & History
J. J. De Groot worked for the J.A. Jones Construction Company.
Evelyn Ellingson arrived in Oak Ridge in early 1943 when many of the site’s facilities were still being constructed.
Attended the University of Pennsylvania.
Leroy Hartmann (1922 – 1944) was an electrical engineer in the Special Engineer Detachment Manhattan District CE in Oak Ridge.
