Colonel James C. Marshall

Colonel James C. Marshall was the Director of the Laboratory for the Development of Substitute Metals, or DSM, the military’s initial cover name for the Manhattan Project. In 1942, Marshall immediately moved from Syracuse, NY where he served in the Corps’s Syracuse Engineer District, to New York City. Concerned that the name DSM would attract too much attention, Marshall set up the Manhattan Engineer District (MED), established by general order on August 13, 1942. Marshall presided over the initial stages of the Project until General Leslie R. Groves assumed control on September 17, 1942.