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Barr Engineering Company <br />4700 West 77th Street <br />BARR Minneapolis, MN 55435 -4803 LOG OF BORING B -2 <br />Sheet 1 of 2 <br />Protect: Proposed RPE Expansion <br />Location. West Elk Mine, Somerset, <br />client: Mountain Coal Company <br />CO <br />Barr Project Number: 06/261003 <br />STANDARD PENETRATION <br />NATURAL DRY <br />w <br />m <br />T <br />w <br />m <br />a <br />p <br />rn <br />0 <br />c'- <br />12 <br />O <br />10 <br />a <br />n <br />E <br />o <br />> 0 <br />z <br />a o <br />cn <br />TEST DATA <br />N in blows /ft O <br />10 zo so ao <br />DENSITY <br />(pcf) it <br />105 115 125 <br />MATERIAL DESCRIPTION <br />(ASTM D2488) <br />SHEAR STRENGTH, ksf <br />Qp X UC ZS TV )K <br />Water Content, % <br />Wp WN WL <br />Surface Elev.: 6332.6 <br />vs o vsR O <br />1 2 3 4 1 <br />20 40 60 <br />0 <br />COAL Black, dry coal fragments and dust. <br />6330 <br />36 <br />Q <br />5 <br />6325 <br />10 <br />50/ <br />3 <br />50/3 <br />LEAN CLAY (CL) Medium grey /brown, slightly moist friable stiff 9.0 <br />clay with coal fragments, silt and fine sand. <br />6320 <br />15 <br />50/ <br />4 <br />50/4 <br />SILT (ML) Medium grey dry silt 14.0 <br />6315 <br />SANDSTONE Light brown with light grey mottling. Primarily fine 19.0 <br />20 <br />grained with minor medium grains. Minor coal in planes of <br />weakness. <br />84% <br />6310 <br />25 <br />: <br />100% <br />6305—_ <br />30 <br />Continued Next Page <br />Completion Depth: 35.0 <br />Remarks: <br />Date Boring Started. 6/18/09 <br />Date Boring Completed: 6/18/09 <br />SAMPLE TYPES <br />WATER LEVELS <br />Logged By: BSE <br />m Auger Cutting 'Shelby Tube <br />While Drilling: <br />Drilling Contractor: Haztech <br />Drilling Method: HSA/CORE <br />Northing: 402983.7 <br />® Split Spoon Rock Core <br />End of Drilling: <br />Eastin : 1450669.3 <br />hrs After Drilling: DRY <br />The stratification lines represent approbmate boundaries. The transition may be gradual. <br />