The Manhattan Project hired the Mallinckrodt Chemical Works to refine the first uranium used in the atomic bomb dropped on Hiroshima, and the company continued its classified work for the Atomic Energy Commission during the Cold War.
The First Secret City
The Manhattan Project contracted Mallinckrodt Chemical Works of St. Louis to refine the first uranium used in the atomic bomb dropped on Hiroshima, laying the groundwork for the development of secret cities at Los Alamos, Oak Ridge, and Hanford.
