National Museum of Nuclear Science & History
Greenhalgh worked in the United States Engineer District Office.
Robert Marshak was an American physicist. Marshak was born in 1916 in New York City. He received a B.
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.
James J. Wainscott served in the 393rd Bombardment Squadron.
