File:Bulletin (1910) (14782251334).jpg

Identifier: bulletin72unit (find matches)
Title: Bulletin
Year: 1910 (1910s)
Authors: United States. Bureau of Mines
Subjects: Mines and mineral resources Mines and mineral resources Mining engineering
Publisher: Washington U.S. Govt. Print. Off. (etc.)
Contributing Library: Gerstein - University of Toronto
Digitizing Sponsor: University of Toronto

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aries from 3^ to 7 feet in thick-ness and was being worked about as extensively as the Pittston bedin the same area, with 85 working faces. The return near the shaftwas passing 147,700 cubic feet of air a minute, carrying 0.26 per centmethane, or 384 cubic feet a minute. The close similarity betweenthe volume of methane in this return and that in the main upcastfrom the Pittston bed is interesting. The Pittston bed is very muchthicker and has more extensive old workings, a fact that indicatesthat the Checker bed is giving off much more methane for each squarefoot of coal exposed. COMPOSITION OF PITTSTON COAL. A sample of coal from the Pittston bed in the No. 14 mine was col-lected November 21, 1910, from a working face near station 4695 onthe Brannagan slope. It represented the entire face except a thinparting of bony coal which was rejected. The sample was analyzedin the laboratory of the Bureau of Mines at Pittsburgh with the fol-lowing: results. BUREAU OF MINES BULLETIN 72 PLATE VI
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MAP OF WORKINGS IN PITTSTON BED, NO. 14 MINE, PA. GAS IN NORTHERN PENNSYLVANIA ANTHRACITE FIELD. 139 Results of analysis of coal from Pittston bed in mine No. 14, 3 miles southwest of Pitts-ton, Pa. (A. C. Fieldner, analyst.) Condition. Referredto coal. Air dried. As re-ceived. Moisture-free. Mois-ture andash free. Proximate analysis: 0O.6O5.76 87.646.00 2.195.6786.245.90 5.80 88.17 6.03 6.17 93.83 Ash 100.00 100.00 100.00 100.00 Ultimate analysis: 2.5687.77 .922.17 .586.00 2.7086.37 .913.55 .575.90 2.5288.30 .931.64 .586.03 2.68 93.97 .99 1.74 .62 Ash 100.00 100.00 100.00 100.00 Calorific value determined: 7,80714,053 7,68213,828 7,77113,988 7,85414,137 8,35815,044 Calorific value calculated from ultimate analysis: a Loss in air drying, 1.60 per cent. SLOAN MINE. The Sloan mine is situated in the outskirts o^ Scranton, its shaftbeing 2 miles west of the city hall. There are extensive workingsin the upper beds, but the No. 2 Dunmore or lowest bed had onlyrecently been opened. A modera

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