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<br />;BOW MINING INC. . - --- ~--- . _ _ _. - - . , _ _.. _ <br />YnCOrn Crw~ YIO~ <br />SECOND QUARTER 1999 JUL 0 9 1999 <br />ENGINEERING INSPECTION Division of Minerals 8 Geology <br />EAST YARD AND WEST VALLEY FILI. <br />GOB DISPOSAL PILES <br />The Sanborn Creek Mine approved permit document includes the requirement to inspect the coal <br />mine waste pile for stability quarterly. The inspection is to be performed by a registered engineer or <br />other qualified professional specialist experienced in construction of earth and rockfill <br />embartkntents. Both Bear Coal Company and the Sanborn Creek Mine have approval to dispose of <br />coal mine waste in the gob pile. <br />On June 30, 1999, I performed a visual inspection of the East Yard and West Valley Fill gob disposal <br />areas at the Sanborn Creek Mine. The East Yard gob disposal area was dry. Nothing was observed <br />during the inspection that would indicate the pile has a potential for failure. Safety bemts are <br />required on the downhill edge of the pile by the Mine Safety and Health Administration. <br />Compaction tests were performed for fourth quarter 1993, second quarter 1994, fourth quarter 1994, <br />second quarter 1995, fourth quarter 1995, second quarter 1996, fourth quarter 1996, and third quarter <br />1997. Gob material has consistently passed compaction tests. Compaction tests are required, as <br />necessary, based on the amount of material added to the waste area. Compaction tests are planned as <br />material is added to the waste area <br />A considerable quantity.of material has been removed from the East Yazd area for use as base <br />material for the new coal stockpile. Plans are to survey the pile on at least an annual basis for <br />accurate volume reports. Surveyor John Menke reported the volume of material removed during <br />1998 as 26,617 cubic yards. A considerable quamity of material has been added to the East Yard <br />azea as part of the clean-up after the mine fire. Bear Coal Company did not haul arty material to the <br />gob pile during the last five years. The Bear Mine was closed during December of 1996. Bear Coal <br />Company may haul material to the gob pile as part of the reclamation of the Bear Mine. <br />P. O. Box 5 3 5 3 7 3 7 Highway 1 3 3 Somerset , C o l o r a tl o e 1 a 3 a U S A <br />TEL (970) 929-5122 FAX (970) 9295177 <br />