Reports of the Inspectors of Mines of the anthracite and bituminous coal regions of Pennsylvania, for the year .. . , one fan and one pump apartment. The fan apartment is113 area; diameter of fan is 20; width of vanes is 6 2; diameter ofsuction opening is 12 or equal to an area of 113. Col. D. P. Brown thesuperintendent has personally given this colliery a great deal of careand attention to make it a success, and having matured his method ofopenings, endorsed by Mr. Frederick Mercur, now deceased, a tunnelwas driven south from shaft 1,000 long, cutting the Orchard, Holmes,Mammoth Seven-foot an
Reports of the Inspectors of Mines of the anthracite and bituminous coal regions of Pennsylvania, for the year .. . , one fan and one pump apartment. The fan apartment is113 area; diameter of fan is 20; width of vanes is 6 2; diameter ofsuction opening is 12 or equal to an area of 113. Col. D. P. Brown thesuperintendent has personally given this colliery a great deal of careand attention to make it a success, and having matured his method ofopenings, endorsed by Mr. Frederick Mercur, now deceased, a tunnelwas driven south from shaft 1,000 long, cutting the Orchard, Holmes,Mammoth Seven-foot and Buck Mountain veins. Gangways are driveneast and west on the four last mentioned veins. The tunnel is driven18 wide and 8 high until cutting the Mammoth vein, from thence tothe Buck Mountain vein the tunnel is driven 13 wide and 8 high. Aseparate air-return tunnel is driven through the rock measures, and par-allel to the transportation tunnel from the Holmes to Mammoth veinwith an area of 100, extending to the Buck Mountain with an area of65. A brick partition has been built in the transportation tunnel from. PLAN OF VENTILATION IN A PORTION ?V, OF MINE WORKINGS OF RAPP SHAFT PACKER COLLIERY N° 5. CO D. P. B ROWN . supt F. E, ZEI BEY. eng HOLMES VCIS
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectcoalmin, bookyear1889
