Lettered; Pamphlets on Mexican Mining Industries

Lettered; Pamphlets on Mexican Mining Industries

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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1884 edition. Excerpt: ...boats of considerable capacity might be employed for the descent to Tempoal. The principal use to which have been applied the products of the Albert and Ritchie mines, has been for the enriching of illuminating gas, for which purpose it commands a price in the market of $20-21 per ton. Both have been employed for distillation into oil--especially albertite from New Brunswick, from which the very superior and well known "Portland Oil" was made previous to the general introduction of native oils from Pennsylvania. According to Mr. Chas. Robb, the Albert mine, employing 12 men and 4 horses, produced for the three years ending Dec. 31, 1871, 19,267 tons, of a value at the mine of $10 per ton. For the three years ending in 1865, the total amount exported from the same mine was, according to Mr. W. Ellman, 56,289 tons. For the twenty years previous to 1872, the product, according to the former authority, was 210,374 tons, most of which was shipped to the United States. The following practical results of experiments upon the illuminating power of the Cristo mineral, conducted at the Glasgow Gas-works, are communicated by Mr. Wallace under date of the 5th Feb., 1876. Gas per ton of mineral at 6o F. 3-inches barom ft. 16, -1 Illuminating power expressed in "English Standard Sperm Candles"f with "Union jet," burning 5 cu. ft. per hour, at inch pressure candles, 34.72 The only copy of Mr. Wallace's communication which I have seen being in Spanish, I am obliged to translate. + The illuminating power of a gas, as tested by the photometer, is ascertained by comparing its light, emitted by its combustion by means of an Argand burner (15 holes of 1-24 inch) with a seven-inch chimney, at the rate of five cubic feet per hour, with the...show more

Product details

  • Paperback | 74 pages
  • 189 x 246 x 4mm | 150g
  • Rarebooksclub.com
  • Miami Fl, United States
  • English
  • black & white illustrations
  • 1236577841
  • 9781236577849