Eliminated FL Ridgewood W.R. Grace Uranium recovery from phosphoric acid, 1954-55. Operation was short-lived, and quantity of material handled appears low. Federal survey of the site in 1977 showed radiation levels typical of phosphate operations. Eliminated IL Blue Island Vapofier Company was scheduled to machine 96 uranium metal billets in 1944, but it's unclear whether the work was performed. Eliminated IL Chicago Quality Hardware and Machine Canned uranium metal rods in aluminum casings, 1944-45, handling at least 29,000 pieces.
Records suggest low potential for contamination.
A 1989 survey found no significant levels of radiation. Eliminated IL Chicago R. Krasberg and Sons Manufacturing Records suggest the company was hired to machine limited amounts of uranium metal in 1944, but it's unclear whether the work was performed. A federal survey in 1989 found no significant radioactive contamination at the site. Eliminated IL Chicago Museum of Science and Industry Rooms used by Argonne National Laboratory for research on radioactive material, 1946-53. No signs of contamination in 1977 federal survey.