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Gold Ore Efining At Home Instructions

As a rule the te1ters are located close to the mining areas which are in foreign axintries. Table 3. U. S. Tin Statistics for 1972 3 Production or ourcx rin, n tric tons Tin-bearing ore Srrelter primary tin 4,060 Seondary tin 20,450 Exrxrts 1,153 Irrports for nsuiption I etaJ. 53,200 Ore.

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