National Museum of Nuclear Science & History
Seymour Ratner was a staff worker at Los Alamos during the Manhattan Project.
O'Brien worked for Stone and Webster Engineering Corporation.
W. C. Marr worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Chester A. Hammond served as a corporal in the 393rd Bombardment Squadron. He was a member of the ground crew on the B-29 Full House.
