National Museum of Nuclear Science & History
Violet Longtin worked for the United States Engineer District Office.
T. F. Hanley, Jr. worked for Hanley & Company.
Enrico Fermi (1901-1954) was an Italian physicist and recipient of the 1938 Nobel Prize in Physics. In 1942, Fermi relocated to the Chicago Met Lab, where he built an experimental reactor pile under Stagg Field at the University of Chicago.
Sam Sparks worked for the J.A. Jones Construction Company.