National Museum of Nuclear Science & History
Frank E. Keene was a janitor at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
R. G. Chandler 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.
