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Drill Hole Lithology Summary <br />• <br />Drill Hole <br />Easting <br />Northing C ollar <br />Total Depth <br />Township Range <br />Section File <br />C-04-13 <br />1 , 329 ,533.62 <br />353,997 8 7,264 21 <br />1,195.60 <br />T04N R94W <br />35 <br />5A <br />Adjusted Depths <br />From <br />To <br />Seam <br />Thickness Lithologic Qualifiers <br />Lithology Type <br />Shade <br />Color <br />641.00 <br />641.35 <br />0.35 <br />carbonaceous mudston <br />dark <br />grey /bro <br />641.35 <br />642.40 <br />1.05 silty <br />mudstone <br />medium <br />grey <br />642.40 <br />643.40 <br />GB <br />1.00 <br />coal /mudstone <br />dark <br />grey <br />643.40 <br />644.30 <br />0.90 silty <br />mudstone <br />medium <br />grey <br />644.30 <br />652.15 <br />7.85 silty <br />carbonaceous <br />mudstone <br />dark <br />grey <br />652.15 <br />653.50 <br />1.35 clayey <br />siltstone <br />medium <br />grey <br />653.50 <br />654.45 <br />0.95 silty <br />carbonaceous <br />mudstone <br />medium <br />grey <br />654.45 <br />654.95 <br />0.50 <br />carbonaceous mudston <br />dark <br />grey /bro <br />654.95 <br />655.30 <br />0.35 <br />carbonaceous shale <br />black <br />655.30 <br />656.75 <br />GC <br />1.45 bright <br />coal <br />black <br />656.75 <br />657.20 <br />0.45 <br />carbonaceous shale <br />black <br />657.20 <br />657.45 <br />0.25 <br />carbonaceous mudston <br />dark <br />grey /bro <br />657.45 <br />658.74 <br />1.29 clayey <br />siltstone <br />light <br />grey <br />658.74 <br />662.26 <br />3.53 interbedded <br />siltstone /sandstone <br />light <br />grey <br />662.26 <br />668.72 <br />6.46 sandy <br />siltstone <br />light <br />grey <br />668.72 <br />671.00 <br />2.28 silty <br />mudstone <br />medium <br />grey <br />671.00 <br />671.30 <br />0.30 <br />carbonaceous mudston <br />dark <br />grey /bro <br />671.30 <br />672.30 <br />HO <br />1.00 bright <br />coal <br />black <br />672.30 <br />672.65 <br />0.35 <br />carbonaceous mudston <br />dark <br />grey /bro <br />672.65 <br />673.65 <br />1.00 clayey <br />siltstone <br />light <br />m <br />673.65 <br />681.20 <br />7.55 interbedded <br />interlaminated <br />siltstone /mudstone <br />medium <br />grey <br />681.20 <br />684.85 <br />3.65 clayey <br />siltstone <br />light <br />grey <br />684.85 <br />685.20 <br />0.35 <br />siderite <br />light <br />brown <br />685.20 <br />687.15 <br />1.95 interlaminated <br />interbedded <br />siltstone /sandstone <br />medium <br />grey <br />687.15 <br />687.80 <br />0.65 interlaminated <br />interbedded <br />siltstone /sandstone <br />medium <br />grey <br />687.80 <br />693.15 <br />5.35 interbedded <br />interlaminated <br />mudstone /siltstone <br />medium <br />grey <br />693.15 <br />693.40 <br />0.25 clayey <br />siltstone <br />light <br />grey <br />693.40 <br />702.10 <br />SH8 <br />8.70 silty <br />clayey <br />sandstone <br />light <br />grey <br />702.10 <br />703.55 <br />SH8 <br />1.45 silty <br />clayey <br />sandstone <br />light <br />grey <br />703.55 <br />709.95 <br />6.40 silty <br />mudstone <br />medium <br />grey <br />709.95 <br />711.20 <br />H8 <br />1.25 calcareous <br />coal <br />light <br />grey <br />711.20 <br />712.25 <br />1.05 carbonaceous <br />laminated <br />sandstone <br />medium <br />grey <br />712.25 <br />714.85 <br />2.60 carbonaceous <br />mudstone <br />medium <br />grey <br />714.85 <br />716.15 <br />1.30 silty <br />mudstone /siltstone <br />medium <br />grey <br />716.15 <br />716.80 <br />0.65 slightly <br />carbonaceous <br />mudstone <br />medium <br />grey <br />716.80 <br />717.50 <br />13 <br />0.70 bright <br />coal <br />black <br />717.50 <br />718.10 <br />13 <br />0.60 <br />carbonaceous shale <br />dark <br />grey /bro <br />. <br />718.10 <br />718.80 <br />13 <br />0.70 bright <br />coal <br />black <br />Rio Tinto Energy America <br />- Colowyo Mine <br />Page <br />183 of 1194 <br />