National Museum of Nuclear Science & History
Harry Grisham worked for the Kellex Corporation at the K-25 Plant.
Cook worked in the United States Engineer District Office.
E. A. Pluhar worked for the Union Carbide & Carbon Corporation.
Crawford worked in the United States Engineer District Office.
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.