National Museum of Nuclear Science & History
Hans von Halban (1908-1964) was an Austrian born French physicist. He finished his studies in 1934. He joined nuclear physicist Niels Bohr in Copenhagen, where he and Otto Frisch discovered that heavy water had very little neutron absorption compared to normal water.
N. C. Poe, Jr. worked for the Poe Piping & Heating Company.
Rupp worked at the 300 Area and the 200 West Area at Hanford during the Manhattan Project.