National Museum of Nuclear Science & History
Ida Cunningham was a laboratory assistant in the Chemistry Division of the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Leroy Hartmann (1922 – 1944) was an electrical engineer in the Special Engineer Detachment Manhattan District CE in Oak Ridge.
John Klein was a member of the Special Engineering Detachment. He worked at the Metallurgical Lab at the University of Chicago and at Los Alamos.
Donald MacMillan arrived in Los Alamos on May 14, 1944. He was an avid figure skater, and worked for Los Alamos National Laboratory for many years.
