National Museum of Nuclear Science & History
J. N. Trimble worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Albert Steiner was a staff worker at Los Alamos during the Manhattan Project.
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.
D. F. Webster worked for Clinton Laboratories at the X-10 Reactor.
Jim Johnson was an ordnanceman at Los Alamos from 1944 to 1945. He was born on January 8, 1926, and started work at the Naval Ordnance Test Station at China Lake, Califiornia in 1944.