The Mexican mining journal . istance in working out adifficult enterprise. My object in reviewing it is to drivehome the fact that, as it touches the operating man,it is simplicity itself. It eliminates correspondence andconversation, the telephone being left for emergencyuse. It suits the needs of the staff men of all ranks. Itis fundamentally the system that the small mine canadapt with profit. I propose to use upon our organization the need ofpropaganda furnishing systems of mine one fundamental principle should govern—thegreatest accuracy compatible with simplicity and com-m


The Mexican mining journal . istance in working out adifficult enterprise. My object in reviewing it is to drivehome the fact that, as it touches the operating man,it is simplicity itself. It eliminates correspondence andconversation, the telephone being left for emergencyuse. It suits the needs of the staff men of all ranks. Itis fundamentally the system that the small mine canadapt with profit. I propose to use upon our organization the need ofpropaganda furnishing systems of mine one fundamental principle should govern—thegreatest accuracy compatible with simplicity and com-mensurate with the requirements of enterprises invarious stages. Such work can be made invaluable. The railway mileage in Brazil during 1913 was in-creased 1,438, making a total of 15,246 miles in opera-tion, of which 2,185 miles are Government lines, 5,716miles private leased roads, 3,447 miles granted to va-rious enterprises by Government concessions, and3,897 miles operated by private corporations underState Tin Mine in Oruro District of Bolivia. Berenguela Tin District, Bolivia. (*) Bv Harold Allman Lewis. This mining district is situated roughly half-waybetween the towns of Oruro and Cochabamba, or 20leagues east or Oruro, in Bolivia. A branch railwayis being constructed between these two towns, and therail-head is now at Arque, slightly over half-way toCochabamba. The nearest point to the mines is Colcha,a village at ihe foot of the Berenguela mountain, 2,500to ft. below the mines and about a league frommost of them. Once the altaplanicie or plain of Orurois left behind, the country becomes rugged and preci-pitous. The building of the railway on the descentfrom the summit of the hills (nearly 15,000 ft. abovesea-level) bounding the Oruro plateau on the east downas far as the town of Arque may be classed as one ofthe engineering feats of the world. The streams cros-sed are among those that eventually combine to formthe Amazon, discharging into the Atla


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Keywords: ., bookcentury1900, bookdecade1900, booksubjectminesandmineralresou