National Museum of Nuclear Science & History
Horace Mahorney was a chemical engineer at the Y-12 plant in Oak Ridge, Tennessee. From September 1943 to November 1945, Mahorney was an operator of the mass spectrometer with Dr.
Major John A. Derry was a top military assistant, mainly working in Washington D.C., during the Manhattan Project.
E. L. Douglas worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Davis worked in the United States Engineer District Office.
