The Manhattan Project hired Mallinckrodt Chemical Works to refine uranium for the atomic bomb, leading to radioactive contamination in the St. Louis area that remains uncleaned 70 years later.
The First Secret City
The Manhattan Project contracted Mallinckrodt Chemical Works to process uranium for the atomic bomb detonated in Hiroshima, ultimately leading to the establishment of clandestine cities at Los Alamos, Oak Ridge, and Hanford.