The Arizona sentinel., 1877-06-23

SILVER KING.-This mine has been ship ping thirty tons per month of selected ore with great regularity for about year
 Nothing is shipped that goes less than
 Sl, ,0oO per ton, all ores below that value
 being stored away on dumps. Actual re. ceipts from sales of ores in San Francisco
 have averaged sL,, 400 per ton, a few SC.
 lected lots going as high as s15,OOO to ! s2O,OO0 per ton. The last lot of ten tons sold for g. per cent of assay value. There :, is now en route one selected lot of over l 1000 pounds of black, malleable chlo- ride ore from this mine, which is expected
 to sell at the rate of sS per pound; also twelve tons of ordinary S1400 ore. An in. 1 cline has been sunk on the ledge, follow. I ing the footwall for about 250 feet, and is in ore all the way down. The last reported 1 assay from the bottom of this incline was $o25. Since the mine passed into the hands of Barney and Reagan no stoping has been done, but ores taken from the openings, and below their standard ship. ping assay of 5000 per ton, have accumu- lated on the dumps to such an extent as to render it necessary to make more room by some disposition of them. As an expert. ment, 5-stamp mill, with power for more stamps, has been put up, and will be started up on Monday, the 18th. The whole dumps will be run through the mill, pulverized, and then passed on to Frue concentrator. The concentrations will then be sacked and shipped for sale 1T San Francisco. Experience has shown that the richer ores from this mine sell to smelting works in California for higher figure than could be realized by milling them on the spot. The want of base metal for fiuxes and scarcity of charcoal mate. rial in the immediate vicinity make smeit. ing works near the mine out of the ques. ton for the present. The last of the con. centrating machinery is due on the ground to-day, and as all is in readiness for it, will be at work by the time the mill has pulp enough made to start up on. The Frue concentrator has always worked we'll on similar ores. It is simple, and consists of an endless rubber belt feet wide and 2S ] feet long, with raised sides. To this is l given quick lateral motion as it passes, over rollers at each end, up an incline of six to twelve inches. The pulp is fed on l to the upper end of the belt with water which carries the tailings and lighter par! | tinla ff, | are carried off. The lateral motion agi. | tates the pulp and makes the heavier ore | particles settle on the belt, which carries | them against the current and over the up. per roller. The under side of the belt is depressed under another roller and passes through tank of water, which washes the concentration from the belt. One horse power runs four of the machines, [ each of which has capacity of ten tons per day. The supply on the dumps of ore assaying from $500 to 5000 is very large. The lowest estimate of its net value for | is placed at S500O00. Even if the concentrators do more than is') claimed for them, the tailings will still be pretty fair milling ore. Last Fall the Cope. land brothers bought one of the smaller Silver King dumps for s2O,OO0 in cash They spent nearly $2o,OOO more in hauling it six miles down to water at Picket Post and concentrating it in rockers, jigs, sluice boxes and gold pans. The ore was not pulverized, but the larger pieces were simply broken and sorted by hand. The richer pieces and concentrations were shipped to San Francisco and sold From less than 300 tons on the dump they real zed over $100OOO. The success of their. sfforts, conducted on so small and imper- ect a scale, gives ample assurance that Barney and Reagan will make big thing put of their present operation. II
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