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West Elk Mine' <br />Page 1 <br /> <br /> <br />Borehole 1997 GEOTECBM <br />MINE <br />I <br />i CAL DR <br />WATE ILLIN <br />R TRE G PROG <br />ATMEN RAM, <br />T FAC S'YLVESTER GULCH <br />ILITIES <br /> <br />number nvest <br />gation Date Depth Depth to fatal PCompletion <br /> <br />97-118 area <br />warehouse bench drilled <br /> <br />O to H2 0 a <br /> <br />1 bedrock depth type a Northin <br />g <br /> <br />97-119 <br />97-121 <br />warehouse bench <br />warehous <br />b <br />h ct-97 <br />Oct-97 dry <br />dry n/a <br />21. 5 20 <br />25 bacMed 398065 <br />backfilled 398105 <br /> <br />97-122 e <br />enc <br />warehouse be <br />h Oct-97 dry n/a 20 backfilled 398015 <br /> <br />97-123 <br />97-124 nc <br />warehouse bench <br />wareho <br />b <br />h Jul-97 <br />Oct-97 dry <br />dry I.'3 <br />r _2? 38 <br />20 backfilled 397918 <br />backfilled 397809 <br /> <br />97-125 use <br />enc <br />warehouse b <br />h Oct-97 dry n/a 20 <br />baclofilled 397947 <br />97-126 enc <br />warehouse be <br />h Jul-97 (31 37 bacl?illed 397896 <br /> <br />97-127 nc <br />mine water treat <br />t <br />l Jul-97 dry (28 28 backfilled 397761 <br /> <br />97-128 men <br />p <br />ant <br />mine water tr <br />t <br />l Jun-97 dry 19.5 19.5 bacldilled 397634 <br /> <br />97-170b ea <br />ment p <br />ant <br />i Jun-91 dry 18 18 backfilled 397593 <br /> <br />I-13 m <br />ne water treatment plant <br />warehouse bench Oct-97 <br /> <br />Sep-97 dry <br /> <br />dry ( 50 <br /> <br />28 50 <br /> <br />36.5 <br />iezometer 397?'I9 <br />inclinometer 397961 <br />a. during the time of drilling. <br />n/a = Bedrock was not encountered while drilling this borehole. <br />b. Screened interval is 40-50 ft., and the sand interval is 38-50 ft. for this <br />Geotec12 <br />Easting <br />446890 <br />447002 <br />4,1%7-78 <br />446925 <br />446944 <br />446879 <br />446697 <br />446698 <br />446561 <br />446984 <br />2/11/98 <br />6805 <br />6791 <br />6815 <br />6815 <br />6809 <br />6826 <br />6825 <br />6816 <br />6843 <br />6844 <br />6871 <br />6807 <br />f <br />2