National Museum of Nuclear Science & History
John Baker worked for the Roane-Anderson Company.
V. L. Looney worked for the United States Engineer District Office.
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.
William Hinch was a research associate at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.