National Museum of Nuclear Science & History
Harrison Brown (1917-1986) was an American geochemist. He worked at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) and Oak Ridge sites during the Manhattan Project.
Roger Sr was a mechanical engineer having graduated from Stanford University during World War II. He and his wife, Katherine Barnes were recruited by the FBI who made contact with them at the Santa Fe training station when they were leaving town, after their honeymoon at Ghost Ranch.
J. D. Mitchell worked for the Roane-Anderson Company.