Show PROGRESS AT CRIPPLE CREEK low cost treatment at the portland plant on low grade ore special correspondence cripple creek colo feb 21 in both the mines and the mills of the cripple creek district there have been important changes this is shown in the production report for january the output of ore is increasing As this is due to the gradual withdrawal of water from the deep ore bodies through the roosevelt tunnel it may be expected to continue another change is the abandonment of the old chlorination process the colorado city mill of the united states reduction refining company no longer appears in the list of plants treating cripple creek ores on the other hand the golden cycle mill in which the ore after a preliminary roast is treated by the cyanide process handles in january the largest tonnage it has had since the mill was built owin owing 0 to the remodeling of the plant which is in progress the tonnage t treated by the portland mill at colorado city was not so lar large lare L e as it has been the cyanide method is to be used instead of chlorination in this mill as soon as the remodeling is completed of the two large concentrating and chanid ing plants located at the mines the portland shows a gain and Strat tons independence a loss the new hew colburn mill appears on the list for the first time and it is hardly beyond the trial run stage according to reliable reports it is making ad a recovery of more than 80 per cent and this without concentration or roasting ro the clancy process is used the total production of the district for january according to mill and smelter reports was tons and the estimated gross value of the product was the tonnage and estimates of value are given in detail in the following table mill tonnage value value golden cycle 7 0 0 2000 old portland 2300 smelters shelters Sm elters Strat tons independence pen dence new portland colburn 3 7 5 wild horse 1000 kavanagh 1200 F G peck president of the portland gold mining company in his annual report says that the cost of remodeling the colorado city plant of the company will be approximately As an all ecamp example ae of the success of the companas comp anys victor mill in handling low grade r ade ore lie he says that the mill in december treated at a cost of 1 13 a ton tons of ore having an average gross value of only 2 80 a ton the total gross value of only the ore treated was w 35 and the reco recovery was 5 per cent portland shipments last year according to tg the annual report amounted in gross value to in addition to this ore having a gross value of was treated ac the victor mill the gross production of the mine since ts first operation in april has been the dividends dividen db paid last year amounted to making a total to jan jai 1 1912 of superintendent fuller reports that the flow from the drainage tunnel is now nearly gallons per minute the work will probably pio plo bably be continued until the raven hill contact is reached |