National Museum of Nuclear Science & History
George Meyers was a glassblower at the SAM Laboratory at Columbia University. He was only a teenager, but had a talent for glass blowing by hand that was needed by Columbia's scientists.
Raymond. J. Bosnak was an electrical engineer at Chicago when he enlisted in the Army. He was assigned to the Special Engineer Detachment at Los Alamos.
John Morris worked for the United States Engineer District Office.