Laserfiche WebLink
BOWIE RESOURCES LIMITED <br />Bowie No. 2 Mine <br />Coal Mine Waste Bank Inspection - 4'h Quarter 2001 <br />On December 3, 2001, 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 />I, J. E. Stover, P.E., have a wide variety of experience in the design and construction of <br />earth fill embankments. Nothing was observed during the inspection that would indicate <br />the pile has a potential for failure. The gob disposal area was dry. All organic material <br />and topsoil has been removed ahead of the waste bank founding. <br />The construction of the pile has progressed well beyond the first terrace (=6080'). The <br />operator began excavating cover material from the gob pile founding and placing the <br />material on the outslope of the pile during the third quarter 1998. During the 2nd quarter <br />1999 additional cover material was excavated and placed on the outslope of the pile. The <br />entire outslope of the pile, up to the first bench, was covered with subsoil. During the 2nd <br />quarter 2001 additional cover material was placed on the outslope of the first and second <br />bench. The depth of cover material placed has not been verified. <br />The coal mine waste generated during the quarter all came from the mine. Approximately <br />13,520 tons of gob were hauled to the gob pile. Coal mine waste is to be placed in the <br />pile in approximately horizontal lifts no more than 24-inches thick. The coal mine waste is <br />spreaa ana compacrive errorr rs proviaea oy a seer propeuea sneepsroor compacror or a <br />front-end loader. Compaction tests were performed on November 28`" and December 2151 <br />on the lifts compacted during the quarter. Relative compaction test results are enclosed. <br />Two of the tests (#1 and #5) taken on December 2151 failed. The two areas were <br />recompacted, retested and passed. <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 below <br />the pile. Additionally, the gob pile sediment pond is located below the pile. If the coal <br />mine waste bank failed, the material would very likely be contained on the bench below <br />the pile and or within the gob pile sediment pond~,?,o;' '= a ;~~ <br />'~~ .> <br />s // ` <br />as E. Stover <br />~- i <br />No. 19230 <br />•+ro~~ <br />