National Museum of Nuclear Science & History
O'Brien worked for Stone and Webster Engineering Corporation.
Bryant worked in the United States Engineer District Office.
Gillen T. Nicely served as a sergeant in the 393rd Bombardment Squadron. He was the tail gunner on the Straight Flush during the Hiroshima mission.
Louis Slotin (1910-1946) was a Canadian physicist. Shortly after World War II, he died from radiation sickness contracted during a dangerous experiment conducted at Los Alamos.
