National Museum of Nuclear Science & History
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.
James H. Coon was an American physicist. He worked on the Manhattan Project at the University of Chicago’s Metallurgical Laboratory and at Los Alamos.
Raymond S. Miller worked on the Manhattan Project at Los Alamos and Oak Ridge. He was sent to Los Alamos in December 1943.