The Mexican mining journal . of the artificial processes that man hasfound best suited for concentrating gold. Prospecting in the Strait of Magellan and Tierradrl Fuego is a more difficult task than in most places,anr many a man has lost his life in his search forgold in that bleak, inhospitable region. Traveling ismostly done in boats, as the land is much cut up bydeep tidewater channels and bays, and covered withdense underbrush or immense peat bogs; while every-where, even on the mountain sides, the soil is softand boggy, so that walking is difficult and often im- possible. The climate, how
The Mexican mining journal . of the artificial processes that man hasfound best suited for concentrating gold. Prospecting in the Strait of Magellan and Tierradrl Fuego is a more difficult task than in most places,anr many a man has lost his life in his search forgold in that bleak, inhospitable region. Traveling ismostly done in boats, as the land is much cut up bydeep tidewater channels and bays, and covered withdense underbrush or immense peat bogs; while every-where, even on the mountain sides, the soil is softand boggy, so that walking is difficult and often im- possible. The climate, however, though stormy, isnot extreme, the thermometer rarely going much be-lov zero or much above 60° Fahrenheit. The meañwinter temperature is about 33° F. and the meansiimmer temperature about 50° F. The season dur-hig which minng can profitably be carried on is fromAugust to May. During the rest of the year frostand snow hinder operations. The capital at presentinvested in the industry is mostly Chilean and Palmilla Mine, Parral, Chih. The lower levels of the Huanachaca de Bolivia mine,at Pulacayo, Bolivia, which were flooded a few yearsago, are being unwatered, 6000 metric tons beinghandled daily. The workings in this mine are extensive. There are miles of underground workings, and thedepth below the outcrop is 750 meters or 536 metersbelow the main level. The water from the lower levelshas a temperature of 56 deg. C. Ventilation is animportant feature, the mine making large quantitiesof carbonic acid gas. The equipment includes several100 h. p. ventilators, large pumps, boilers, a 75- miletransmisión line for electric power, a machine shopthat would compare favorably anywhere, electric lo-comotives for underground work, and a 30- kilometerrailway connecting with the main lines of the of the machinery is of French and English makewith occasional units of American manufacture- Thecompany is organized largely with French capital,headquarters being
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectminesandmineralresou
