National Museum of Nuclear Science & History
F. J. Underwood worked for the Roane-Anderson Company.
Harold Hoover was a member of the Special Engineer Detachment during the Manhattan Project. He worked as a filter foreman at the Y-12 Plant, but his real job was in counterintelligence, to ensure no sabotage occurred.
Victor Migneco served in the 1st Ordnance Squadron.
Grizzell worked in the United States Engineer District Office.