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• <br />Underground Inflov+ Investigation <br />r~ <br />u <br />The entire perimeter of the mine v+as observed and notes v+ere kept concerning <br />where points or zones of ground v+ater inflow occurred within the mine. The Mine <br />4Jorkings Map shows the locations where ground water flov+ was observed. It should <br />be noted that the coal face appeared moist (generally the lover 10 inches) over <br />extensive portions of the mine; puddles were present periodically; and drips v+ere <br />observed from the roof. These areas were considered insignificant; hov+ever, only <br />those locations where measurable flow occurred were noted. (For the purposes <br />of comparing future similar investigations with the observations documented here, <br />the observer should be aware that if measurable flow is occurring at a point not <br />mentioned in this report, then an increase in flow has occurred.) <br />The follov+ing list documents the points and/or zones where ground water <br />inflow v+as observed to be measurable v+ithin the mine: <br />1. Much of the length of the west wall of the "1 worth t•lain was observed <br />to be moist (approximately the lower 10 inches). Periodically puddles <br />were observed and drips were noticed from the roof. The small quantities <br />of ground v+ater inflow apparently move down dip, pr-ogr-essively deeper <br />into the mine. In the northern area of the °1 North Main, measurable <br />flows were observed moving down the entry, although the flov+ periodically <br />diminished v+here rubble on the mine floor allov+ed the water to move <br />beneath the surface. A suitable measuring point for monitoring flow <br />into the mine from the zone along the vest face of =1 t•Jorth Main v+as <br />found in the ='1 North t•1ain, Entry 1, Station 25+40. <br />2. Two roof falls have occurred in the =1 61est Sub 14ain that have slight <br />ground v+ater inflov+s associated with them. The largest r-oof fall is located <br />in the ~l lJest Sub F1ain, Entry =2, Station 17+10; the second roof fall is <br />near~y in Entry =3, Station 17+10. Although ground water inflov+ is <br />apparent at both of these sites, the roof conditions are too unstable to <br />suggest monitoring flows at the point of inflov+. Tv+o points v+ere <br />9 <br />