National Museum of Nuclear Science & History
A. T. Helgerson worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Bruno A. Katlarz served in the 393rd Bombardment Squadron.
George Mallinckrodt was a physicist at the Manhattan Project’s Los Alamos, NM facility. He also worked at Argonne National Laboratory, the successor of the University of Chicago’s Metallurgical Laboratory (“Met Lab”).
Margaret H. Dike was born in Prescott, Arizona, and she grew up in Cimarron, New Mexico. Before the war, Dike worked at the Department of Terrestrial Magnetism in Washington, DC.
