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Barr Engineering Company <br />4700 West 77th Street <br />BARR Minneapolis, MN 55435 -4803 LOG OF BORING B -1 <br />Sheet 3 of 3 <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 />y <br />TEST DATA <br />DENSITY <br />w? <br />0, <br />o <br />00 2-." <br />N in blows /ft ® <br />(pcf) <br />w <br />MATERIAL DESCRIPTION <br />a > 0 <br />10 20 30 40 <br />105 its 125 <br />M <br />$a <br />(ASTM D2488) <br />a <br />z <br />F- <br />> <br />2 L- <br />SHEAR STRENGTH, ksf <br />Water Content, % <br />W <br />O <br />E (n <br />Qp X UC A TV X <br />Wp WN WL <br />y <br />VS & VSR O <br />1 2 3 4 <br />20 40 60 <br />60 <br />SANDSTONE Grey, tan, red/dark red and white sandstone 60.0 <br />., <br />interbedded with siltstone. Black powder in shoe. <br />6130 <br />20% <br />65 <br />6125 <br />0% <br />70 <br />COAL Black with red flecks, dull platy coal with vitrain 70.0 <br />laminations. <br />SANDSTONE Light grey sandstone with coualy laminations near 710 <br />6120 <br />contact. <br />39% <br />-75- <br />75.0 <br />80 <br />85 <br />90 <br />Completion Depth: 75.0 <br />Remarks: <br />Date Boring Started: 6/25/09 <br />Date Boring Completed: 6/25/09 <br />SAMPLE TYPES <br />WATER LEVELS <br />Logged By: BWL <br />m Auger Cutting 'Shelby Tube <br />While Drilling: <br />Drilling Contractor: Haztech <br />Drilling Method: HSA/CORE <br />End of Drilling. <br />Northing: 403263.5 <br />® a <br />Easo n : 1450468.5 <br />Split Spoon Rock Core <br />hrs After Drilling: DRY <br />The stratification lines represent approbmate boundaries. The transition may be gradual. <br />