National Museum of Nuclear Science & History
Russell Armitage was a Textile Expert in the employment of The Kellex Corporation, a subsidiary of the M.
Norman F. Modine was a research assistant at the University of Chicago Met Lab. He was a signer of the Szilard petition.
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.
