National Museum of Nuclear Science & History
Conrad Roescke was a staff worker at Los Alamos during the Manhattan Project.
Frances Zollner worked as a purchasing agent for the Manhattan Project at the University of Chicago. At Chicago, Zollner would meet many of the scientists who were improving various scientific parts and procedures throughout the duration of Manhattan Project.
S. B. Robertson worked for the United States Engineer District Office.
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.