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Barr Engineering Company <br />4700 West 77th Street <br />BARR Minneapolis, MN 554354803 LOG OF BORING B -3 <br />Sheet 3 of 4 <br />Project: Proposed RPE E )pansion <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 />0) <br />TEST DATA <br />DENSITY <br />w <br />o <br />X <br />0\ <br />N in blows /ft @ <br />(pcf) it <br />o <br />L <br />MATERIAL DESCRIPTION <br />0 <br />0 <br />a <br />> <br />10 20 30 40 <br />105 115 125 <br />(ASTM D2488) <br />CL <br />LL <br />o <br />?� <br />a. <br />SHEAR STRENGTH, ksf <br />Water Content, <br />w <br />O <br />E <br />0 <br />Qp X UC A TV CIE <br />Wp WN WL <br />in <br />VS o VSR O <br />60 <br />1 2 3 4 <br />20 40 60 <br />SANDSTONE Grey sandstone with minor coal dust. Minor <br />•, <br />layers of siltstone. Some clay infilling. Minor pyrite present in <br />6305 <br />small dykes. <br />100% <br />65 <br />6300 <br />100% <br />70 <br />:: <br />6295 <br />100% <br />75 <br />6290 <br />89% <br />80 <br />6285 <br />96% <br />85 <br />6280 <br />90% <br />90 <br />----- - - - - -- <br />C5nTinuea 10ext - <br />Completion Depth: 100.0 <br />Remarks: <br />Date Boring Started: 6/18/09 <br />Date Boring Completed: 6/19/09 <br />SAMPLE TYPES <br />WATER LEVELS <br />Logged By BSE <br />Drilling Contractor: Haztech <br />m Auger Cutting 'Shelby Tube <br />While Drilling: <br />Drilling Method: HSA/CORE <br />Northing: 402650.2 <br />® <br />End of Drilling- <br />tin <br />Eas 1450672.6 <br />Split Spoon Rock Core <br />hrs After Drilling: 75.28 <br />I ne stratITication ones represent appro)amate boundaries. I he transition may be gradual. <br />