National Museum of Nuclear Science & History
R. M. Smith worked for the United States Engineer District Office.
Myrtle E. Karcher was a laboratory technician in the Health Division of the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Raymond W. Leffler served in the 1395th Military Police Company, Aviation.
David Greenglass (1922-2014) was a machinist and member of the Special Engineer Detachment who engaged in espionage activities for the Soviet Union at Los Alamos during the Manhattan Project.
