National Museum of Nuclear Science & History
Henry Martin worked for the J.A. Jones Construction Company.
Dale Babcock was a physical chemist and colleague of Crawford Greenewalt. Greenewalt took Babcock and a few other close DuPont colleagues with him into the new world of atomic energy.
P. D. Simpson worked for the Poe Piping & Heating 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.
