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About The west shore. (Portland, Or.) 1875-1891 | View Entire Issue (Oct. 26, 1889)
WEST SHORE. T&S$fr? mm 'wr-fAm THKHWKIX KII.L-llll.ORINATION WoHKH. with a Btcel hliiM'. A peculiar h1iiik' to the shoulder which rnincit the Btamp causes it to partially turn around at each owillation, thus wcnrin off the bottom regularly. After tho quart is sufficiently pulverized a fine screen allows it to overflow uxin silver coated copper plates containing mercury, which seize all the free (fold, forming an amalgam. The lluid sand next Hows over (luted surface into which the iron sulphates, in which thin ore in very rich, dink by reason of their greater fineness and weight. A these surfaces are re volved they empty their sulphates into Ix.xcs arranged on the under ride. These concentrators, as they are called, are dinned up once a day, the sulphates Wing shoveled into cant and conveyed down an incline to the t hlorination workn. Here they aredried and (.hoveled int.i bin rituated over the roasting furnace, and eat tere.l regularly over revolving grate. Four grate are placed in each furnace and each revolution load the upH-r one with frerii sulphate and empties th lower of Hum which have Un roanlcd. Wood is used for fuel in thii oration, it Wing t cheapest and fur niidiing a more easily regulated heat. A man called the sailer, armed w ith a long oon rcMemhlihg a butter tester, empties a sinful of wilt on the lower grate at each revolution, through ,1,. in the furnace wall. Theoxidiie-lMilplmt.-. after Wing removed from the furnace, are stored in tight vata an.l chlo. rine gas iiilnKliuttl from underneath. Thin :: gas mtv the remaining gold and forum a chloride iT gold, which ia removed fnmi the Mnd by rinsing w ith w ater. The chloride ia an amWr-colored fluid, varying in tint with iu richness. The gold ia'preeipitat.-d by the addition of sulphate of irx.n, ,ad,. I.y curing dilut.nl sulphuric acid on ld cr of iron. The gaa ia made fro, mi,,, inon salt I.y the addition of the acid. Work in the chlorination building ig very on. healthful. The gU causes a tickling of ih throat with a constant desire to cough, whilo tho sulphur fumes caping from the fur nace kill all vegetation within their reach. The copjier plate in the stamp mill arc cleaned up once i month. The amalgam, a bright l.xiking parte, iB plnced in retort and heated. The mercury rises as a vajxir and is conveyed by pipes to a condenser and iiBed again, being none tho worso for tho wear. The gold iB refined, melted into bricks and shipped in plain lxxes to tho mint at San Francisco. Douglas City furnishes an excellent opportunity fur the study of the AhiHka Indian. From all part of the territory Hydahs, Auks, Tlinkets and Sitkai con gregate here. Some of them come in for a few days, bringing the season's catch of Bkins and fire to ex change with our merchants for blanket and rubber goods. Numbers of them work in the mine at pack ing and on the ditch. They soon learn the use of tools and are renBonably expert. Whilo the men arethui - ..; 'J 4 pit Mi m -?v i ! t Of ALfA IKDIAN l llli liHKN