National Museum of Nuclear Science & History
Roman Vigil was a staff worker at Los Alamos during the Manhattan Project.
J. J. De Groot worked for the J.A. Jones Construction Company.
Charles Youmans worked for the Tennessee Eastman Corporation at the Y-12 Plant.
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.