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i • <br />BOWIE RESOURCES LIMITED <br />Bowie No. 2 Mine <br />Coal Mine Waste Bank Inspection - 1'` 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 material generated underground in developing air <br />overcasts. According to the contractor which hauled the coal mine waste to the pile, a <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 gab pile sediment pond. <br />~••^~•• <br />~~FO <br />E r <br />' ~ <br />• <br />~ <br />,. <br />t•~O~•S <br />o <br />. <br />F .. <br />, <br />,f <br />~ <br />r <br />E S•,~~r• <br />"~ <br />9 <br />l <br />' <br />~y <br />' <br />~ <br />, ~ <br />0 <br />. <br />^ <br />i : Q <br />~ ~ <br />~ <br />~* <br /> es~~ <br />