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National Museum of Nuclear Science & History

Thomas Mason

Laboratory DirectorOak Ridge, TN

X-10 Graphite ReactorY-12 Plant
ExpertScientist
Thomas Mason Listen to Thomas Mason’s Oral History on Voices of the Manhattan Project

Thomas (Thom) Mason is the President and CEO of Triad National Security, LLC and the director designate of Los Alamos National Laboratory. A condensed matter physicist, he previously served as the director of Oak Ridge National Laboratory from 2007-2017, and as Senior Vice President for Global Laboratory Operations at Battelle. He was born in Halifax, Nova Scotia to a geophysicist father and a biochemist mother. He went on to to get an undergraduate degree in physics from Dalhousie University in Halifax, and a PhD at McMaster University. 

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