National Museum of Nuclear Science & History
Manning worked for Stone and Webster Engineering Corporation.
R. C. O'Dell worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Julius M. Simmons was an American chemist. He worked as a research assistant at the Metallurgical Laboratory in Chicago 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.
