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Barr Engineering Company <br />4700 West 77th Street <br />BARR Minneapolis, MN 55435 -4803 LOG OF BORING SB09 -10 <br />Sheet 1 of 2 <br />Project: Proposed Coal Handling <br />Location: West Elk Mine, Somerset, <br />I <br />Client: Mountain Coal Company <br />Facilities <br />CO <br />Barr Project Number: 06/261004 <br />STANDARD PENETRATION <br />NATURAL DRY <br />a4 <br />TEST DATA <br />DENSITY <br />w <br />y <br />o <br />\ <br />N in blows /ft O <br />(pcf) it <br />o <br />MATERIAL DESCRIPTION <br />L a <br />> 0 <br />10 20 30 40 <br />105 115 125 <br />co <br />C <br />(ASTM D2488) <br />C <br />Z <br />?? <br />O <br />SHEAR STRENGTH, ksf <br />Water Content, <br />W <br />CL <br />E <br />(n <br />Qp X UC A TV X <br />Wp WN WL <br />Surface Elev.: 6260.0 <br />co <br />VS D VSR O <br />0 <br />1 2 3 4 <br />20 40 60 <br />SANDY SILT WITH GRAVEL (ML) Medium -light grey. Dry. <br />47 <br />rod <br />COAL Black, dry coal clasts with dust. 1.0 <br />35 <br />4 <br />6255 <br />5 <br />--------------- <br />COAL Black, dry coal clasts with some carbonaceous mudstone 4.5 <br />and siltstone. Slightly moist. <br />66 <br />>>@ <br />66 <br />GRAVEL (GW) Black coal clasts with siltstone gravel. slightly 7.0 <br />moist. <br />• �' <br />�' <br />19 <br />•'� <br />l <br />6250--10- <br />119 <br />19 <br />COAL Black, coal clasts and coal dust with siltstone clasts. 12.5 <br />Slightly moist. <br />/ <br />fj <br />7 <br />17 <br />l <br />6245--15- <br />24 <br />P2 <br />6240--20- <br />4 <br />r�{4 <br />I <br />1 <br />6235--25- <br />I <br />I <br />I <br />1 <br />10 <br />10 <br />FAT CLAY (CH) Dark grey -black clay with coal clasts and coal 27.0 <br />dust, gravel. Moist. <br />l <br />I <br />6230t <br />30 <br />I <br />Continued ex a e <br />Completion Depth: 30.0 <br />Remarks: <br />Date Boring Started: 6/30/09 <br />Date Boring Completed: 6/30/09 <br />SAMPLE TYPES <br />WATER LEVELS <br />Logged By BWL <br />Drilling Contractor: Haztech <br />Drilling Method: HSA <br />m Auger Cutting ,Shelby Tube <br />While Dulling: <br />Northing: <br />g" <br />®Split Spoon n Rock Core <br />nd of Drilling: <br />Eason . <br />hrs After Drilling: <br />i ne stratmcaaon ones represent approwmate t)ounaanes. I ne transition maybe gradual. Revised March 19, 2010 <br />