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• <br />I 1 <br />a <br />L <br />C 0 <br />U3 <br />8 <br />c� <br />z <br />0 0 <br />Barr Engineering Company <br />4700 West 77th Street <br />B ARR Minneapolis, MN 55435 -4803 LOG OF BORING B -10 <br />Sheet 1 of 1 <br />Project: 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 />d <br />(1) <br />TEST DATA <br />DENSITY <br />w <br />c <br />o <br />N in blows/ft @ <br />(pc1 it <br />o <br />r <br />MATERIAL DESCRIPTION <br />2 <br />a <br />>0 <br />to zo 3o ao <br />tos Its 1zs <br />16 <br />(ASTM D2488) <br />~ <br />Z � <br />m <br />a) <br />a) <br />a `o <br />SHEAR STRENGTH, kst <br />Water Content, % <br />Lu <br />E <br />(n <br />Op X UC 0 TV )K <br />WP WN WL <br />Surface Elev.: 6177.1 <br />`0 <br />VS D VSR O <br />0 <br />t z 3 a <br />20 ao so <br />SANDSTONE Grey /orange brown, very fine grained, dry <br />6175 <br />:: <br />20% <br />5 <br />6170 <br />66% <br />10 <br />6165 <br />.. <br />54% <br />15 <br />15.0 <br />20 <br />25 <br />30 <br />Completion Depth: 15.0 <br />Remarks: <br />Date Boring Started: 6/27/09 <br />Date Boring Completed: 6/27/09 <br />SAMPLE TYPES <br />WATER LEVELS <br />Logged By: BWL <br />Drilling Contractor: Haztech <br />Drilling Method: CORE <br />m Auger Cutting 'Shelby Tube <br />While Drilling: <br />Northing: 403361.4 <br />® Split Spoon a Rock Core <br />End of Drilling: <br />Eastin : 1450227.8 <br />hrs After Drilling: <br />ne stratmcaoon ones represent approximate oounaanes. I ne transition may oe graaual. <br />