National Museum of Nuclear Science & History
D. V. Parker worked for the Roane-Anderson Company.
Floyd J. Ritchie served in the 1027th Air Material Squadron.
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.
Charles Maier was a security guard at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Andrew H. MacMahon was the Chief Property Officer of the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
