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Gold Refining Machine Capacity 2 Tons Per Day

It is made very difficult if the silver exceeds 100 parts per 1,000, and at pretoria bullion was not treated if the silver exceeded 50 parts per 1,000.Mill gold with 80 to 110 parts of silver, and cyanide gold if it contained more than 50 parts, were melted with gold obtained by the chlorination process to reduce the silver to less than 50.