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Show I HERE IS HIGH-GRADE RED METAL PRODUCER It has become so much a custom 10 . talk about copper mines that yit id 1 to 1 2 per cent of the metal, or translating the per. outage Into pounds per ton to 'sound better, t hat il is rather startling , to find a copper rnlno producing on a large scale on- that assays about ? per I o-.nt copper. That i what the Poderosa i Mining Company obtains ;i OollalciaHl. j I Chile. This mine is also of interest by 'virtue of its being und r I In- management of Robert Hawxnurst, an engineer well i known In the United States. His eom-1 eom-1 pany produces about 2000 tons of ore per month thai assays about 30 per cent copper, cop-per, henides some "low-grade'' ore that goes at 11 per cent copper and some I "waste" that goes -t to .", per cent. In I the siv months ending June 30, 19nS. the 1 production of high-grade ore was 18,-1 18,-1 795 tons. At the beginning of thai year .the ore reserves were estimated at 100,-000 100,-000 tons-, which amount was fully main-I main-I tamed by the developments 01 the 1 semester. The production of oopper in , chile in i90fc havlns; been about 38,000 I tonf. it win be seen 'hat the output of j the Podorosn mines forms p. respectable I percentage of the total The vein from which this ore js mined appears to he from 1" to 4" inches in width. engineering engineer-ing If Mining Journal. |