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Apparatus for treating materials, namely, apparatus for the recovery of metals from refractory wastes and sulfide ores, apparatus for the recovery of precious metals from refractory gold sulfide ores, apparatus for processing contaminated materials such as oil tank residues, oil based drilling muds, ex gas works solids and tars, perchlorethylene, DDT groupings and PCB's, apparatus for extracting substances such as diesel fuel oil, gas, steel and char from scrap tires, apparatus for recovering base metals from metal waste material