Robert Howes Sr.
Robert Ingersoll Howes Sr. was an electrical engineer and one of the first 100 scientists recruited to Los Alamos to work on 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.