National Museum of Nuclear Science & History
A. J. D’Arcy worked for the Union Carbide & Carbon Corporation.
George Placzek was a Czech physicist. He was born in Brno, Moravia, which was then part of Austria-Hungary but today is in the Czech Republic.
James E. Grady served in the 1st Ordnance Squadron.
W. H. Zimmer worked for the United States Engineer District Office.
