National Museum of Nuclear Science & History
M. O. Swanson worked for the United States Engineer District Office.
In the 1944 Hanford Phone Book, he is listed under R. C. Theil. In the 1945 Hanford Phone Book, he is listed under R.
Roos worked at the 300 Area and the 200 West Area at Hanford during the Manhattan Project.
Joseph R. Lewis served in the 603rd Air Engineering Squadron.
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.
