National Museum of Nuclear Science & History
H. R. House worked for the Union Carbide & Carbon Corporation.
H. M. Ellis, Jr. worked for the Roane-Anderson Company.
Robert S. Coles was a research associate at the University of Chicago’s Metallurgical Laboratory during the Manhattan Project.
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.