Queensland Government Mining Journal

Queensland Government Mining Journal

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All stone likely to be won above the water level from each of the reefs will be to a great extent free milling, and a good extraction can be ... The stone from every reef on Normanby so far discovered carries more or less chalcopyrite, and it would not be wise to assume that ... itself is far from satisfactory, there is still reason to believe that cyaniding can be counted on as a final factor in any treatment scheme.

Title:Queensland Government Mining Journal
Publisher: - 1922


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