FISHER-CALO CHEMICAL WAS PRIMARILY INVOLVED IN THE PACKAGING STORAGE, AND DISTRIBUTION OF INDUSTRIAL CHEMICALS AS WELL AS THE RECLAMATION OF WASTE PAINT AND METAL FINISHING SOLVENTS. MIDWEST CHLORINE AND MIDWEST AMMONIA, WHICH SHARED THE ONE- LINE FACILITY, WERE INVOLVED IN THE PRODUCTION OF SODIUM HYPOCHLORITE AND THE PACKAGING OF LIQUID CHLORINE, ANHYDROUS AMMONIA, SULFUR DIOXIDE, ANHYDROUS HYDROGEN CHLORIDE, AND METHYLENE CHLORIDE FOR SALE TO COMMERCIAL USERS OF THESE MATERIALS.