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<br />BOWIE RESOURCES LIMITED <br />Bowie No. 2 Mine <br /> <br />Coal Mine Waste Bank Inspection - 3rd Quarter 1998 <br />On September 21, 1998, I performed the required quarterly visual inspection of the <br />Bowie No. 2 Mine coal mine waste bank in accordance with Rule 4.10.2. <br />The gob disposal area was dry, and the gob being placed in the pile was dry. I, J. E. <br />Stover, P.E., have a wide variety of experience in the design and construction of earth <br />fill embankments. Nothing was observed during the inspection that would indicate the <br />pile has a potential for failure. All organic material and topsoil has been removed <br />ahead of the waste bank founding. <br />The construction of the pile progressed beyond the first terrace during the quarter <br />(=6035' - 6040'). The operator began excavating cover material from the gob pile <br />founding and placing the material on the ouslope of the pile during the quarter. <br />Coal mine waste is placed in the pile in approximately horizontal lifts no more than.24- <br />inches thick. The coal mine waste is spread and compactive effort is provided by a self <br />propelled sheepsfoot compactor. Compaction tests were performed on 815, 8111, 9/01, <br />9/04, 9/10 and 9/18/98 for the third quarter of 1998. All of the compaction tests <br />attained at least 90 percent of the maximum dry density attained in a laboratory <br />compaction test in accordance with ASTM D698. Anew proctor test was run during the <br />quarter on material currently being placed in the waste pile. The reference proctor <br />value changed from 69.5 to 73 pd. <br />The coal mine waste generated during the quarter was from routine operations in the <br />mine. According to the contractor which hauled the coal mine waste to the pile, a total <br />of 2,333 loads were hauled during the quarter (19,597 in place cubic yards @ 8.4 <br />cy/load @ 12 tons per load). <br />July August September Total Loads <br />104 1551 678 2,333 <br />A failure of the pile would probably not be a hazard to human life. The pile is located <br />above a large flat bench. The bench is approximately 80 to 150-feet wide directly <br />below the pile. Additionally, the gob pile sediment pond is located below the pile. If the <br />coal mine waste bank failed, the material woujrj+v~-~ly be contained on the bench <br />below the pile and or within the gob pile se~o)~twtposc(tftF~ <br />_ ~~~~/9B <br />~`'•'_`r~~ r~~ <br />i * : E. 3tou,er Date <br />i.o ~ P.E. No. l~~jb <br />.9 '. ~ 4,~ <br />~~S~ONAI ,N.~~ <br />.~r• <br />