National Museum of Nuclear Science & History
Morris Jackson worked for the United States Engineer District Office.
A. L. Barber worked for the H. K. Ferguson Company.
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.
J. P. Hogan worked for Hanley & Company.
