National Museum of Nuclear Science & History
Cummins worked in the United States Engineer District Office.
James J. Johnson served in the 603rd Air Engineering Squadron.
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.
Major General Kenneth Nichols (1907 – 2000) served as District Engineer of the Manhattan Engineer District.
