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BIG RIVER ZINC CORPORATION is an electrolytic zinc refinery located in Sauget, Illinois located about 3 miles from downtown St Louis, Missouri. The refinery is located on approximately 37 acres of property. For over 60 years, the refinery produced zinc metal by treating zinc sulphide concentrate from local mines to produce approximately 100,000 tons per year of zinc metal. In February 2006 the refinery ceased operation. ZincOx Resources plc acquired the facility in June 2006 and starting in May 2007 began to modify the facility to make it suitable for processing oxide concentrate (HZO) recovered from Electric Arc Furnace Dust. The zinc contained in the HZO will be dissolved in BIG RIVER ZINC's refurbished leach plant. The resultant zinc bearing solution will be purified in a new solvent extraction circuit, prior to conventional zinc recovery using BIG RIVER ZINC's existing electrowinning, melting and casting equipment to produce zinc ignots.