National Museum of Nuclear Science & History
Stalder worked for Stone and Webster Engineering Corporation.
Major John A. Derry was a top military assistant, mainly working in Washington D.C., during the Manhattan Project.
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.
H. J. Ratjen worked for the Tennessee Eastman Corporation at the Y-12 Plant.
