National Museum of Nuclear Science & History
Paul J. Esterline was an engineer. He attended Ohio State University for two years, and then attended the Chicago Technical Institute in the late 1920s, learned engineering drafting there.
I. J. Pardee worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Bartholomew "Bart" Rivers was an instrument technician at the Hanford, Washington facility from 1943 through the end of the war.