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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 />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 />TEST DATA <br />DENSITY <br />o <br />( \ <br />N in blows/ft OO <br />(Pcf) <br />t <br />MATERIAL DESCRIPTION <br />t <br />T Z <br />10 20 30 ao <br />105 115 125 <br />i <br />cc <br />(ASTM D2488) <br />a <br />>4) <br />a o <br />SHEAR STRENGTH, ksf <br />Water Content, % <br />a) <br />W <br />E rn <br />Q, X UC A TV X <br />WP WN WL <br />cc <br />VS A VSR O <br />e <br />1 2 3 4 <br />20 40 60 <br />60 <br />SANDSTONE Grey, tan, red/dark red and white sandstone 60.0 <br />interbedded with siltstone. Black powder in shoe. <br />6130-- <br />20%u <br />-65- <br />5 <br />6125 <br />6125-- <br />0% <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 71.0 <br />6120 <br />conotact. <br />a <br />39 /a <br />75 <br />75.0 <br />_80- <br />085 <br />-85- <br />_90- <br />90Completion <br />CompletionDepth: 75.0 <br />Remarks: <br />Date Boring Started: 6/25/09 <br />1 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 />i Drilling Contractor: Haztech <br />' <br />Drilling Method, HSA/CORE <br />of Drilling: <br />' Northing: 403263.5End <br />®Split Spoon Rock Core <br />DRYEastin <br />: 1450468.5 <br />hrs After Drilling' <br />The stratification lines represent approiamate boundaries. The transition may be gradual. <br />