National Museum of Nuclear Science & History
B. W. Menke worked for the United States Engineer District Office.
Fredrick “Fred” D. Johnson was a research assistant at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
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.
D. R. Johnson worked for the Roane-Anderson Company.
