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.
Virginia Olsson worked as a secretary (today the term would be ‘administrative assistant’) first with Colonel J.
Clyde Crowley worked for the Roane-Anderson Company.