7 ensp 0183 ensp In all ore dressing and milling Operations including flotation cyanidation gravity concentration and amalgamation the Working Principle is to crush and grind often with rob mill amp ball mills the ore in order to liberate the minerals In the chemical and process industries grinding is an important step in preparing raw materials for subsequent treatment 20 ensp 0183 ensp Mining Liners Mining uses multiple liners for multiple functions heap leach liners solution pond liners tailings dams Check local regulations for lining materials requirements Heap leach mining uses a chemical solution to dissolve metals in ore which can then be collected by a liner and refined
