National Museum of Nuclear Science & History
Col. Oliver Haywood was on General Leslie Groves‘ staff from May to December 1946. Haywood had a long military career after graduating from West Point in 1936 and receiving both a M.
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.
Brown worked in the United States Engineer District Office.