Jerome J. Ossip

William S. Johnston

William S. Johnston was a research assistant at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.

C. E. Jakielski

Leonard Connor

Hans Halban

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.