National Museum of Nuclear Science & History
W. J. Carroll worked for the Roane-Anderson Company.
George J. Brown served as a sergeant in the 393rd Bombardment Squadron. He was a member of the ground crew regularly assigned to the B-29 Up An’ Atom.
Seymour Calvert served for 11 months in the Special Engineering Detachment at Los Alamos. He specialized as a chemical engineer, and carried out experiments with beryllium that were often dangerous.
S. D. Tatalovich worked for the United States Engineer District Office.