National Museum of Nuclear Science & History
R. H. Martin worked for the United States Engineer District Office.
J. J. Mitchell worked for the Fercleve Corporation.
F. R. O'Brien worked for the Tennessee Eastman Corporation at the Y-12 Plant.
John H. Williams (1908-1966) was a Canadian-American physicist. Williams transferred to Los Alamos in early 1943 and was among the first group of scientists to arrive on the Hill.
