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Show A FORTUNE ON THE SURFACE. Outline of Possibilities of Milling- at Le Roi Mine, B. C. Rossland (B. C.) Miner. The attitude of the Le Roi company in res-pect to concentration is? not divulged di-vulged as yet. but it is stated that the matter is under advisement. The successful suc-cessful application of concentration elsewhere in the camp is certain to stimulate the company into activity at no late date, especially in view of the vastly improved conditions in respect re-spect to the deep levels? of the mine. ; The Le Roi would seem to offer a magnificent field for a milling process that will handle low-grade ores. It has been demonstrated that a fifty-ton concentrate r can handle ore at $2 per I ton,, and it has been authoritatively stated that in a 200-ton mill the costs of all features of the process, saving all losses, would be reduced to give a maximum per cost of $1.50. In the case of Le Roi ores handled at the company's com-pany's own fmelting works, the smelter charges assessable against a ton of crude ore handled by milling would not exceed 35 cents, so that dump ores? carrying $1.S3 would pay their way jf handled on a reasonably extensive stale. The tonnage of such ores now available avail-able at the L Roi is? great. On tho No. 1 dump approximately 50,000 tons of ore remain, and the average values are probably not less than ?5 per ton. Therefore, this dump represents a net profit after milling and Fmelting of $150,000. AM this is a conservative estimate. es-timate. , . Since ore was first hoisted out of the big five-compartment shaft at the Le Roi the material segregated from the product shipped has been passed over a dump at the rear of the sorting house. The dump accumulated at this? point probably contains 200,000 tons of ori running $2 to $5 per ton. Heretofore no record has been kept of the quality of these sortings, hence it is difficult to arrive at an adequate idea on this? point, but the $3 average is probably on-servative. This . dump, therefore, represents a profit to the company of $230,000 on the basis s?tated. Further reducing the figures given and allowing a large sum for the construction con-struction of the milling works, it is apparent that the adoption of concentration concen-tration by the Le Roi company promises prom-ises a profit of a quarter of a million dollars' on material which is row regarded re-garded as waste, so far as the tonnage outside of the No. 1 dump is concerned. With a 200-ton concentrator the present pres-ent tonnage of milling ores available for immediate treatment would keep the plant running for almost throe years, at the end of which time the company would have reaped the profits ppeeified, and probably half as much again, a fine milling plant would have been paid for and additional great reserves re-serves of milling ore would have been accumulated. The benefits? accruing to the community in the meantime would have been great, and the advantages on all sides so substantial as to recommend recom-mend the idea strongly. The foregoing refers, of course, to dump ores only. .On this class of ore the costs of mining have been charged to profit and loss account, and do not figure as charges against the values of the ore. There seems to be no apparent appar-ent reason, however, why concentration concentra-tion could not be successfully applied to. the bulk of the ore shipped from the Le Roi. It is accepted that the higher grades' of Rossland ores can be j shipped in crude shape to better ad- j I vantage, but in the case of $9 and $10 j ore? possessed in immense quantitte'5 by the Le Roi. and shipped largely from i the mine, concentration seems to af- j ford the means whereby the losses en- countered in various months of 1903! can be converted into profits for the future. I Mine-run ores carry a charge of $2.50 . to $3 for costs of extraction. Added to ! S2 for milling, smelting and indirect j charges, puch as refining, the ' total costs of iealizing on such ore? would . be $5, or possibly $5.50, in view of t freight charges to be met. On the $ ore which the Le Roi shipped in quail- tity during 1903, the application of millimr would obviously have left a profit of $3 at least, instead of entail- ing a loss, as was the ease in- various months. The tonnage required to maintain the smelting operations at Xorthport at full capacity to realize i the lowest smelting charges? obtainable could be made up by the expansion of the company's customs smelting business busi-ness now being put into effect. There is no special originality in these remarks, and thev may be taken to represent, with pome variation in figures, the probable s?eope for concentration con-centration in connection with all the mines of the Rossland camp. |