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RECEIVED BOWIE RESOURCES LIMITED Bowie No. 2 Mine JUL 151999 Coal Mine Waste Bank Inspection - 2n° Quarter 1999pNisionotMineralsBGeology On June 28, 1999, I performed the required quarterly visual inspection of the Bowie No. 2 Mine coal mine waste bank in accordance with Rule 4.10.2. The gob disposal area was dry. I, J. E. Stover, P.E., have a wide variety of experience in the design and construction of earth fill embankments. Nothing was observed during the inspection that would indicate the pile has a potential for failure. All organic material and topsoil has been removed ahead of the waste bank founding. The construction of the pile has progressed beyond the first terrace (=6050'). This elevation was corrected from the last quarter's report. The operator began excavating cover material from the gob pile founding and placing the material on the outslope of the pile during the third quarter 1998. No additional cover material was excavated during the 1'~ quarter 1999. During the second quarter additional cover material was excavated and placed on the outslope of the pile. The entire outslope of the pile, up to the first bench, is covered with subsoil. The depth of cover material placed has not been verified. Coal mine waste is to be placed in the pile in approximately horizontal lifts no more than 24-inches thick. The coal mine waste is spread and compactive effort is provided by a self propelled sheepsfoot compactor. Coal mine waste was hauled to and from the pile during the quarter. Coal mine waste hauled to the pile during the quarter was end dumped along the northwest boundary of the pile. It was not spread or compacted, therefore no compaction tests were performed during the quarter. Approximately 1,000 tons of coal mine waste was excavated from the pile and hauled to Powderhorn Coal Company's Roadside preparation plant. Additionally, approximately 8,800 tons of coal mine waste was transported from the portal bench directly to Powderhorn Coal Company's Roadside preparation plant. The coal mine waste generated during the quarter was from ventilation shaft excavation. Approximately 120 loads were hauled during the quarter (1,008 in place cubic yards @ 8.4 cylload @ 12 tons per load). Lambert & Associates is currently evaluating the strength parameters of the material from the ventilation shaft to determine its effect (if any) on the stability of the pile. A failure of the pile would probably not be a hazard to human life. The pile is located above a large flat bench. The bench is approximately 80 to 150-feet wide directly below the pile. Additionally, the gob pile sediment pond is located below the pile. If the coal mine waste bank failed, the material would very likely be~cp~a~ised on the bench below the pile and or within the gob pile sediment pond. ~~poo.??:?i,~a~ o~ '' '•. " p1,r;ESt?S~dyer' ~~, ;~.:jVo. 19230 ; 4; .m ~, . o~vaL ;. -.~..