National Museum of Nuclear Science & History
L. D. Larkin worked for the H. K. Ferguson Company.
Cathcart worked at the 200 East 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.
George Briggs was only 20 years old when he began working with the Special Engineer Detachment at Los Alamos.