Nuclear Museum Logo
Nuclear Museum Logo

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. 

Related Profiles

Stafford L. Warren

Oak Ridge, TN

Stafford Leak “Staff” Warren was a Colonel in the Army Medical Corps and the Chief Medical Officer of the Manhattan Engineer District (MED).

Leon Leventhal

Los Alamos, NM

Leon Leventhal was a nuclear chemist and radiation expert who worked at Oak Ridge, the University of Chicago’s Met Lab, and Los Alamos Laboratory during the Manhattan Project.

Alvin Graves

Chicago, IL

Alvin Graves (1909-1965) was an American physicist. Graves was invited to join the University of Chicago Metallurgical Laboratory and in 1942 he accepted the position and became a member of the Manhattan Project.

H. T. Davies

X-10 Graphite Reactor

H. T. worked for Clinton Laboratories at the X-10 Reactor.