National Museum of Nuclear Science & History
H. P. Graves worked in the United States Engineer District Office.
Luther Ramsey was a staff worker at Los Alamos during the Manhattan Project.
Minnie M. Daniels was a laboratory technician and assistant in the Chemistry Division at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Robert Hargraves worked for the H. K. Ferguson Company.
