National Museum of Nuclear Science & History
Lester Coleman worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Paul Sperling was a staff worker at Los Alamos during the Manhattan Project.
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.
Jas Tancil worked for the Poe Piping & Heating Company.