National Museum of Nuclear Science & History
Hays worked in the United States Engineer District Office
Robert Ingersoll Howes Sr. was an electrical engineer and one of the first 100 scientists recruited to Los Alamos to work on the Manhattan Project.
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.