National Museum of Nuclear Science & History
Murray worked for Stone and Webster Engineering Corporation.
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.
Alfred Hanson (1914-2005) was an American physicist. Alfred Hanson came to the Manhattan Project from the University of Wisconsin where he had recently completed his doctoral work, studying the Van de Graaf “long tank” accelerator.
Coyne worked at the 100-F Area at Hanford during the Manhattan Project.
