National Museum of Nuclear Science & History
Martha G. Johnson was a laboratory technician in the Health Division of the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Thomas Anderson was an American army officer with the Manhattan Engineer District. Tom Anderson arrived to Los Alamos in 1945 and was assigned to work with Dr.
Arthur R. Hanson served in the 320th Troop Carrier Squadron.
Halbrook worked in the United States Engineer District Office.