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III IIIIIilllllii III <br />BOWIE RESOURCES LIMITED <br />Bowie No. 2 Mine <br />Coal Mine Waste Bank Inspection - 1u Quarter 1998 <br />On March 16, 1998, I performed the required quarterly visual inspection of the Bowie <br />No. 2 Mine coal mine waste bank in accordance with Rule 4.10.2. <br />The gob disposal area was basically dry, however the gob being placed in the pile was <br />damp to wet. I, J. E. Stover, P.E., have a wide variety of experience in the design and <br />construction of earth fill embankments. Nothing was observed during the inspection <br />that would indicate the pile has a potential for failure. All organic material and topsoil <br />has been removed ahead of the waste bank founding. <br />Coal mine waste was being placed in the pile in approximately horizontal lifts no more <br />than 24-inches thick. Waste material was being spread with a D-9 Caterpillar Track <br />Dozer and compactive effort was being provided by a self propelled sheepsfoot <br />compactor. Compaction tests were performed during March for the first quarter of <br />1998. All of the compaction tests attained at least 90 percent of the maximum dry <br />density attained in a laboratory compaction test in accordance with ASTM D698. <br />The coal mine waste which was generated during the quarter was from the initial portal <br />excavation and from waste materia{ generated underground in developing air <br />ove;:asts. According to the contractor which hauled the coal ~nirie waste to the pile, d <br />total of 2,037 loads were hauled during the quarter (17,100 in place cubic yards @ 8.4 <br />cy/load @ 12 tons per load). <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 would very likely be contained on the bench <br />below the pile and or within the gob pile sediment pond. <br />~~~0 RE <br />~~Q,P~..... ~ <br />• O .~S E S <br />i o~: ~.`~ <br />i~:~ <br />~ * } i~~~ <br />wS <br />.~? : P.E. <br />E~ <br />