National Museum of Nuclear Science & History
R. E. Hoffman worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Ralph Gates (1925-2018) was a chemical and electrical engineer who was recruited to the Manhattan Project as a part of the Special Engineer Detachment in early 1945.
Louis Turner was a metallurgical engineer who worked on the Manhattan Project. He first became involved with the Manhattan Project at the University of Chicago in 1943.