Arizona citizen., 1877-06-30
Silver King Products.

This mine has been shipping thirty
 tons per month of selected ore with
 great regularity for about a year.
 Nothing is shipped that goes less than
 5000 per ton, and ores below that
 value are being stored away on dumps.
 Actual receipts from sales of ores in San
 Francisco have averaged $l,400 per ton, a few selected lots going as high as
 $15,000 to S20,000 per ton. The last lot of ten tons sold for eighty-two per cent. of assay value. There is now en route one selected lot of over 1000 pounds of black malleable chloride ore from this mine, which is expected
 to sell at the rate of eight dollars per pound; also twelve tons of ordinary $l400 ore. An incline has been sunk on the ledge, following the footwall for about 250 feet, and is in ore all the way down. The last reported assay from the bottom of thIS incline was $S25. Since the mine passed into the hands of Barney and Reagan, no stop ing has been done, but ores taken from the openings, and below their standard shipping assay of 5000 per ton, have accumulated on the dumps to such an extent as to render it necessary to make more room by some disposition of them. As an experiment., a 5-stamp mill, with power for more stamps, has been put up, and will be started up on Monday, the 2jth. The whole dumps will be run through the mill, pulveriz- ed, and then passed on to a Frue con- centrator. The concentrations will then be sacked and shipped for sale in San Francisco. Experience has shown that the richer ores from this mine sell to smelling works in Cali iornia for a higher figure than could be realized by milling them on the spot The want of base metal for fluxes and scarcity of charcoal mate rlal in the immediate vicinity make smelling works near the mine out of the question for the present. The last of the concentrating machinery is due on the ground today, 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 well on similar ores. It IS simple, and consists of an endless rubber belt four feet wide and twenty-eight feet long, with raised sides. To this is given a quick lateral motion as it passes, over rollers at each end, up an incline of SIX 10 twelve inches. The pulp is fed on tO the up- per end of the belt with water which carries the tailingS and lighter parlic- les down To the lower end, where they are carried of The lateral motion agitates the pulp and makes the hea- vIer ore particles settle on the belt which carries them against the current and over the upper roller. The under side of the belt Is depressed under an other roller and passes through tank of water, which washes the cOncentra- ton 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 Sl0O0 is very large The lowest estimate of its net value for concentration is placed at $500000. Even if the contractors dol more than is claimed for them, the tailings will still be pretty fair milling ore. Last Fall the Copeland brothers bought one of tine smaller Silver King dumps for $20,0O0 in cash. They spent nearly $20,000 more in hauling it six miles down to water at Picket Post and concentrating it in rockers, iIgs, sluice boxes and gold pans. The ore was not pulyerized, but the larger pieces were simply broken and sorted by hand. The richer pieces and con- centratiOns were shipped to San Fran cisco and sold. From less than 300I tons on the dump they realized over $l00000.