National Museum of Nuclear Science & History
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.
R. M. Bailey worked for the Tennessee Eastman Corporation at the Y-12 Plant.
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.
Crowley worked at the 100-D Area at Hanford during the Manhattan Project.