National Museum of Nuclear Science & History
Mary Johns worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Leo P. Hassen was a security guard at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
R. C. Wright worked for the Union Carbide & Carbon Corporation.
RoRon Fredlund was a finance sergeant with the 509th Composite Group on Tinian Island during World War II.
Frank E. Keene was a janitor at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
