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" G, having continuous buckets 12 by 30 in., and speed of 50 buckets per minute, elevates the impurities into a bin X, from which it is loaded into a 6-ton car and hoisted by a pair of geared tail-rope engines, with 10- by 18-in. "
Bulletin of the United States Geological Survey - Seite 63
von Geological Survey (U.S.) - 1909
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Transactions of the American Institute of Mining, Metallurgical and ..., Band 35

American Institute of Mining, Metallurgical, and Petroleum Engineers, American Institute of Mining Engineers - 1905 - 1152 Seiten
...tail-rope engines, with 10- by 18-in. cylinders, to the top of the adjoining hill and automatically dumped. The machinery of the entire plant is driven by a double engine W, with cylinders 13 by 18 in., running 150 rev. per min. ; the connection to the first and second...
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The Chief Commercial Granites of Massachusetts, New Hampshire and Rhode Island

Thomas Nelson Dale - 1908 - 458 Seiten
...COAL COMPANY'S MINE NO. 5, NEAR STOCKETT, MONT. K NELSON COAL MINE AND PLANT AT SAND COULEE, MONT. r The machinery of the entire plant is driven by a double...treated in the above-described process is stated below: R(fuse remaining in coal at Cottonwowl Coal Company's mint, Stockett. Mont. Per cent. Pea 4 Nut 3 Stove...
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The Design of Mine Structures

Milo Smith Ketchum - 1912 - 508 Seiten
...tail-rope engines, with 10 X 18 in. cylinders to the top of the adjoining hill and automatically dumped. The machinery of the entire plant is driven by a double engine W ', with cylinders 13 X 18 in., running 150 revolutions per minute, the connection to the first and...
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Page's Engineering Weekly, Band 5

1904 - 548 Seiten
...engines, with lo-in. by i8-in. cylinders, to the top of the adjoining hill and automatically dumped. The machinery of the entire plant is driven by a double engine W, with cylinders 13-in. by 18 in., running 150 revolutions per minute; the connection to the first...
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