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s <br /> MINE INFLOW STUDY <br /> On September 14 , 1987 a mine inflow study was conducted to <br /> determine the quantity and quality of water flowing into the mine. No <br /> new point sources were identified at the New Elk Mine during the 1987 <br /> survey , however, five new points were identified in recently mined <br /> areas of the Golden Eagle Mine. Areas which were examined included all <br /> active and inactive underground mine workings. Figures 1 and 2 present <br /> the mapping results of each point source inflow (faults, fractured <br /> roof, fractured floor, exploration drill hole, etc. ) and each area wide <br /> inflow ( drainage from seals to abandoned mine workings ; areas of <br /> weeping coal faces , roof, or floors; unsealed mine areas; etc. ) that <br /> were encountered during the survey. <br /> Golden Eagle Mine <br /> At the Golden Eagle Mine, thirteen sources have been <br /> identified in the 1987 mine inflow survey . Table 1 presents the <br /> location, probable water source and estimated gallons per minute (gpm) <br /> for each of these sources. Major sources were measured volumetrically <br /> while seepage and weeping faces were estimated. A total of 45. 4 gpm <br /> inflow was estimated. This relates to 26. 4 gpm measured during the <br /> 1986 survey. Approximately 14. 4 gpm is from the air shafts and a drill <br /> hole ( sources II , VI and VIII ) while the remainder is from seepage <br /> originating in the coal seam. <br /> Representative water quality of the inflow was measured . <br /> Table 2 presents the temperature , conductivity and pH of each new <br /> source. Quality ranged from 12. 0 to 15. 0 temperature, 1305 to 1430 <br /> conductivity, and 8. 2 to 8. 7 S.U. pH. <br /> Mine water inflow was collected in a sump and discharged from <br /> the mine by pumping. Table 3 presents average daily discharge from the <br /> mines (calculated from daily pump records and averaged for each month. <br />