| Show GROWTH OF THE CYANIDE PROCESS that the discovery and utilization of the cyanide process of ore reduction has been a great blessing 11 to the mining t interests of this intermountain region no one can for a minute dispute or deny As a matter of fact the greatly increased gold output of the mines of the west during r the past seven or eight 11 years is due almost entirely to the use of this process in the treatment of low Z grade ores ores were practically valueless heretofore because of the fact that they could hardly pv pay shipping char charges cres to say nothing of the cost of millin milling or smelling smelting sm elting with the introduction of tie the cyanide process however the west entered upon a new era of prosperity in the matter of its gold Z output and now scores of mining camps which years ago ago were practically deserted are now in a flourishing condition and this condition can be accredited to the cyanide method of extraction we all know that this process has given iven to utah one of the greatest gold camps to be found in this western country reference is made to mercur whose immense deposits of gold ore were so low in grade 11 that no previously known process could be used in their reduction so as to show a profit on the right side of the led ledger 9 er in other portions of the state the cyanide process is being t successfully employed and this use is followed by a heavy and regular flow of the yellow metal into the channels of trade and commerce which but for this timely d discovery is covery would still be locked up in natures treasure vaults as valueless as the surrounding country rock colorado mining camps have felt the beneficent effects of the use of the cyanide processes of reduction old and abandoned mines in the centennial state have been resurrected and re juvena ted by the utilization of cyanide in dissolving the gold of low grade ores and the ultimate recover recovery of the precious metal by precipitation on zinc shavings or zinc dust california the theland land of gold is now operating gold I 1 properties of such low t grade that the forty niner would not condescend to look at them and this only because of the fact that the use of cyanide enables the operator to nake big money where others have failed oreon oregon ore on also can boast of its fine array of cyanide plants so can nevada idaho wyoming and washington while in the dakotas are in operation or in ourse course of construction than can be claimed for smelters shelters sm elters stamp mills or concentration works in south dakota near deadwood cyaniding cyan iding t is in the height 11 of its popularity twelve mills using this process are in successful operation and ellit eight el lit of these have been built during the past two or three years in speaking of the magnificent in success attending the th c operation of these cyanide plants the pioneer times says few people not directly interested realize how much is being done in and for the black hills by the cyanide process there are now twelve twel ve cyanide plants in operation in the hills and of these eight have been built in the last year and three within the last two years all are proving entirely satisfactory ft result and mines are being as a dl opened t that have up u beret heretofore afore been and tle de on account of the low Ivor grade of 53 8 th was only a few the 00 ore years aro ago that it 18 or 20 no ore was worth u 1 mining anim came possible to treat 8 and abell h it he profit it was a rema remarkable reable gain 10 ore at a try now it has been for the coun and 5 ore will yield a profit demonstrated t bat plants are arc springing by esa cyanide iliae m up over the magic in aric t for th there e r e is country like lik 0 supply of tb this is low grade practically no limit to jofh the hills there are twelve refractory ore in 14 the cyanide active plantain operation two that thai have down to ellaro enlarge e the been clo closed ed capacity four in of construction process and a number in c conten nila tion among these 11 a large Z custom itolo plant in addition to cyanide straight 11 ff many mills using I 1 other processes are a equipped with cyanide departments 8 for the treatment of tailings so that the of the process is being za seen and adaptability appreciated on every hand in time to come bett better erand and cheaper methods for the hand handling handling liny of low in grare rare gold ores may be discovered but we d doubt it very much As a matter of fact the cyanide process has done more for the mij mining industry of the west than has the advance in silver quotations during the past fourbears four fou jears ryean and its application and usefulness is practically unlimited |
