National Museum of Nuclear Science & History
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.
Milo Martin worked for the Tennessee Eastman Corporation at the Y-12 Plant.
R. E. Francis served in the 390th Air Service Group.
D. M. Smith worked for Clinton Laboratories at the X-10 Reactor.