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REP33934
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Entry Properties
Last modified
8/25/2016 12:10:32 AM
Creation date
11/27/2007 6:40:59 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1996083
IBM Index Class Name
Report
Doc Date
4/24/2003
Doc Name
1st Quarter 2003 Coal Waste Bank Inspection
From
J.E. Stover & Associates
To
DMG
Permit Index Doc Type
Waste Pile/Fill Report
Media Type
D
Archive
No
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BOWIE RESOURCES LIMITED <br />Bowie No. 2 Mine <br />Coal Mine Waste Bank Inspection - 1~' Quarter 2003 <br />On March 31, 2003, I performed the required quarterly visual inspection of the Bowie No. <br />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 to damp. All organic <br />material and topsoil has been removed ahead of the waste bank founding. <br />The construction of the pile has progressed above the third terrace (=6098'). The out <br />slopes of the terraces have been covered. The depth of cover has not been verified. <br />Most of the coal mine waste was generated from the mine. Approximately 1,590 tons of <br />gob were hauled to the gob pile. Coal mine waste is to be placed in the pile in <br />approximately horizontal lifts no more than 24-inches thick. The coal mine waste is <br />spread and compactive effort is provided by a self propelled sheepsfoot compactor or a <br />front-end loader. A compaction test was performed on April 3`d. The results of four of five <br />compaction tests were below specification so the lift was re-compacted. A follow up <br />compaction test was performed on April 16'". All of the retests attained at least 90% of the <br />maximum dry density attained in a laboratory compaction test in accordance with ASTM <br />D698. Relative compaction test results are enclosed. <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 li®k~2}~2c9s~'ined on the bench below <br />the pile and or within the gob pile sediment pore~S °E"s jo FyF,, <br />IV o ~ G o O , <br />~~ °Q ~0 0 <br />ld. i~'' ~~ ~ ° ~ a L/ /. <br />E. <br />
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