National Museum of Nuclear Science & History
Kay Tracy was Arthur Compton’s secretary at the Metallurgical Laboratory in Chicago during the Manhattan Project.
Ralph Steinhardt was a member of the Special Engineer Detatchment (SED) at Los Alamos during the Manhattan Project.
Francis McHale was a security and safety man, a civilian, with the Corps of Engineers. He came to Hanford from the Pennsylvania Ordnance Works to set up fire and safety and police protection for the Manhattan Engineer District.
