National Museum of Nuclear Science & History
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.
Evelyn Brown was a laboratory assistant at the Metallurgical Laboratory in Chicago during the Manhattan Project.
Mildred Johnston worked for the J.A. Jones Construction Company.
