National Museum of Nuclear Science & History
A. F. Sullivan worked for the Roane-Anderson Company.
Gilbert Plass was a Canadian physicist. Plass was born in 1922 in Toronto. He received a B.S. in physics from Harvard University before being hired to work on the Manhattan Project at the Chicago Met Lab, where he worked as an associate physicist.
Robert Harrison was an engineer in the Special Engineering Detachment (SED) in Oak Ridge, Tennessee from August 1944 to August 1945.
Stone worked at the 100-B Area at Hanford during the Manhattan Project.
J. H. Sievers worked for the Tennessee Eastman Corporation at the Y-12 Plant.