National Museum of Nuclear Science & History
G. L. Ryan worked for the United States Engineer District Office.
Ed Zeigler worked for the United States Engineer District Office.
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.
Johnston worked at the 300 Area at Hanford during the Manhattan Project.
Don Cowen worked for the Tennessee Eastman Corporation at the Y-12 Plant.
