Canadian mining journal July-December 1915 . — FLotv S*£~t:> - /A/sp//?fr/cw Coppcx Co Mll- (ft) ) 72> J M /T * ? -. Co** A* £ A>£f Ton* h^oficr p*r 7&r for t*r* or* r o?c ?* * Recent experience goes to show that on some ores theseries treatment gives a slightly cleaner tailing; onothers it does not. It is not necessary to extend thisarrangement of cells beyond two cells in series. In aheavily mineralized ore this arrangement is decidedlyadvantageous, and in such a ease the rougher concen-trate might be of high enough grade to dispense withthe re-cleaning operation. The froth from the

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Canadian mining journal July-December 1915 . — FLotv S*£~t:> - /A/sp//?fr/cw Coppcx Co Mll- (ft) ) 72> J M /T * ? -. Co** A* £ A>£f Ton* h^oficr p*r 7&r for t*r* or* r o?c ?* * Recent experience goes to show that on some ores theseries treatment gives a slightly cleaner tailing; onothers it does not. It is not necessary to extend thisarrangement of cells beyond two cells in series. In aheavily mineralized ore this arrangement is decidedlyadvantageous, and in such a ease the rougher concen-trate might be of high enough grade to dispense withthe re-cleaning operation. The froth from the secondcell in the series might be returned to the originalfeed, in the same way that the tailing is returned fromthe cleaner when practising a roughing and cleaningoperation. A number of such combinations are pos-sible. At the mill of the Inspiration Copper Co. Fig. 4).the original feed goes to 12 primary roughers. the tail-ing from which is classified into sand and slimo. thesand going to tables and the slime to 12 seeondaryroughers. The concentrates from both the primaryand secondary roughers go to four cl

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Keywords: ., bookcentury1900, bookdecade1910, booksubjectminesandmineralresou