Reports of the Inspectors of Mines of the anthracite and bituminous coal regions of Pennsylvania, for the year .. . o $ u 00 > —J CD <£ o DU O z < UJ cc I- < u — V Q. 3- u u £ nr ~) o u LU DO ^. MAP O F NEW CASTLE MINE OPERATED BY BERWIND WHITE COALMINING CO Off. Doc] Eighth Bituminous District. 447 Corporation. It consists of three double drifts, Nos. 9, 10 and 11, all ofwhich are going- to the dip. Some great mistake appears to have beenmade in the location of the openings and general plan of the mines, thiswas not sufficient, however, for in the method of working they have beenm
Reports of the Inspectors of Mines of the anthracite and bituminous coal regions of Pennsylvania, for the year .. . o $ u 00 > —J CD <£ o DU O z < UJ cc I- < u — V Q. 3- u u £ nr ~) o u LU DO ^. MAP O F NEW CASTLE MINE OPERATED BY BERWIND WHITE COALMINING CO Off. Doc] Eighth Bituminous District. 447 Corporation. It consists of three double drifts, Nos. 9, 10 and 11, all ofwhich are going- to the dip. Some great mistake appears to have beenmade in the location of the openings and general plan of the mines, thiswas not sufficient, however, for in the method of working they have beenmultiplied. The ventilating power is ample, there being three largefurnaces—one for each pair of drifts—each 8 feet wide and containingabout 12,000 fire bricks. Forty-eight thousand cubic feet of air wasmeasured at one of them with outside temperature at 70° F.; yet the ven-tilation was not as good as might be expected from the large volumepassing the furnace. This was due to the single-entry system and longcontinuous air cm-rents. The drainage was bad in some parts of themine, especially during or after rainy weather. This might have beenremedied by driving the lowest heading in advance of the
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectcoalmin, bookyear1889
