National Museum of Nuclear Science & History
Henry Paul was a staff worker at Los Alamos during the Manhattan Project.
Barger worked in the United States Engineer District Office.
Petersen worked in the 200 West Area at Hanford during the Manhattan Project.
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.
