National Museum of Nuclear Science & History
Margaret Strombeck was a swtichboard operator at the Metallurgical Laboratory in Chicago during the Manhattan Project.
J. J. De Groot worked for the J.A. Jones Construction Company.
Chester A. Rogalski served as a corporal in the 393rd Bombardment Squadron. He served as tail gunner in the Jabit III on the Hiroshima bomb mission.
Livingston worked in the 100 F Area at Hanford during the Manhattan Project.
R. H. Ball worked for the Tennessee Eastman Corporation at the Y-12 Plant.