National Museum of Nuclear Science & History
Stalder worked for Stone and Webster Engineering Corporation.
Christiansen worked at the 100-B Area at Hanford during the Manhattan Project.
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.
