National Museum of Nuclear Science & History
John Nicklin worked for the United States Engineer District Office.
Dean Castimore was a Manhattan Project veteran and a fireman. During the war he was stationed at Los Alamos.
Charles E. Frohn served in the 1027th Air Material Squadron.
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.
John Black worked for the J.A. Jones Construction Company.