National Museum of Nuclear Science & History
John Ramsey worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Kirk worked in the 300 Area at Hanford during the Manhattan Project.
Sanford McDonnell was a mechanical engineer with the Special Engineering Detachment at Los Alamos from April 1944 to April 1946.
Grim worked for Stone and Webster Engineering Corporation.
C. L. McCallum worked for the Tennessee Eastman Corporation at the Y-12 Plant.