National Museum of Nuclear Science & History
O'Brien worked for Stone and Webster Engineering Corporation.
Maurice “Maury” Shapiro was an American physicist who studied underwater explosions at Los Alamos during the Manhattan Project.
W. W. W. Vivian worked for the United States Engineer District Office.
Jim Johnson was an ordnanceman at Los Alamos from 1944 to 1945. He was born on January 8, 1926, and started work at the Naval Ordnance Test Station at China Lake, Califiornia in 1944.