National Museum of Nuclear Science & History
W. M. Brobeck worked for the Tennessee Eastman Corporation at the Y-12 Plant.
T. J. Kelly worked for the Kellex Corporation at the K-25 Plant.
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.