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.
Warren Johnson worked for Clinton Laboratories at the X-10 Reactor.
R. W. Erickson worked at the 200 West Area at Hanford during the Manhattan Project.