National Museum of Nuclear Science & History
Roy Tonneson worked for the Asbestos & Magnesia Materials Company.
Joseph S. Stiborik served as a sergeant in the 393rd Bombardment Squadron, a part of the 509th Composite Group.
Leonard Quartararo was a staff worker at Los Alamos during the Manhattan Project.
Born in 1903 in Baltimore, Mackie studied civil engineering at Union College in Schenectady, New York.
