National Museum of Nuclear Science & History
R. V. Weisenfluh worked for the Union Carbide & Carbon Corporation.
Frederick Hobbs worked for the United States Engineer District Office.
Joseph H. Madden served in the 603rd Air Engineering Squadron.
W. G. Chmielewski was a carpenter at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
John Flegal worked for the H. K. Ferguson Company.
