National Museum of Nuclear Science & History
Chris Keim worked for the Tennessee Eastman Corporation at the Y-12 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.
Attended the University of Wisconsin.
D. A. Parker worked for the Edenfield Electric Company.