National Museum of Nuclear Science & History
Gawthrop worked at the 300 Area at Hanford during the Manhattan Project.
Leroy Hartmann (1922 – 1944) was an electrical engineer in the Special Engineer Detachment Manhattan District CE in Oak Ridge.
Lois Roy worked for the United States Engineer District Office.
Sara B. Chettkow was a laboratory technician in the Health Division of the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
