National Museum of Nuclear Science & History
Pfennig worked for Stone and Webster Engineering Corporation.
Felix Bloch was a Swiss physicist and the winner of the 1952 Nobel Prize. Bloch was born in 1905 in Zurich, Switzerland.
Harvey C. Rentschler was an American inventor and director of research at the Westinghouse Electric Corporation Lamp Plant in Bloomfield, New Jersey.
Fred Vaslow, a physical chemist, began working on the Manhattan Project while a graduate student at the University of Chicago.