National Museum of Nuclear Science & History
Robert P. Matthews worked as a member of Project Alberta, the team that transported and assembled the Fat Man and Little Boy atomic bombs.
Henry Jarrell, Jr. worked for the Kellex Corporation at the K-25 Plant.
Ralph Steinhardt was a member of the Special Engineer Detatchment (SED) at Los Alamos during the Manhattan Project.
C. E. Winters worked for the United States Engineer District Office.