National Museum of Nuclear Science & History
R. J. Guthrie worked for the Watson-Flagg Engineering Company.
T. W. Tarkington worked for the J.A. Jones Construction Company.
John D. Watson was an American civil engineer. In 1942, he joined the J.A. Jones Construction Company.
Fred E. Bruenger served in the 320th Troop Carrier Squadron.
Wallace Vogwill was a laboratory helper at the Chicago Met Lab during the Manhattan Project.
