National Museum of Nuclear Science & History
Winfield Sylvester was a staff worker at Los Alamos during the Manhattan Project.
Donald M. Casey served in the 603rd Air Engineering Squadron.
W. H. Seaman worked for the United States Engineer District Office.
Mars worked for Stone and Webster Engineering Corporation.
R. A Winkel worked for the Union Carbide & Carbon Corporation. At Oak Ridge he assisted in the development of the K-25 plant.