National Museum of Nuclear Science & History
Clarence Joyce worked for the Poe Piping & Heating Company.
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.
William C. “Bill” Elmore was an American experimental physicist who served as the chairman of the Physics department at Swarthmore College from 1948 to 1968.
Albert Young was a patent attorney at the University of Chicago’s Metallurgical Lab (“Met Lab”) during the Manhattan Project.