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• <br />D rill Hole <br />Drill Hole Lithology Summary <br />E asting N Collar T otal De pth T <br />Range Section File <br />C -04 -32 <br />1, 331, 736.90 349, 874. 7, 519.23 1,041.90 <br />ate...... <br />T04N <br />R 94W 36 <br />5B <br />......__ ...,, ... <br />Adjusted Depths <br />,....� .. ,. ,....,� ._..... <br />From <br />To <br />Seam Thickness Lithologic Qualifiers <br />Lithology Type <br />Shade <br />Color <br />143.88 <br />145.36 <br />1.48 silty <br />mudstone <br />grey <br />145.36 <br />146.24 <br />0.89 clayey <br />siltstone <br />light <br />grey <br />146.24 <br />150.78 <br />4.53 <br />sandstone <br />light <br />grey <br />150.78 <br />151.32 <br />0.54 coaly <br />mudstone <br />grey /bro <br />151.32 <br />151.76 <br />0.44 <br />siltstone /sandstone <br />light <br />grey <br />151.76 <br />156.20 <br />4.44 interbedded <br />mudstone /siltstone <br />grey <br />156.20 <br />158.47 <br />2.27 <br />sandstone <br />light <br />grey /bro <br />158.47 <br />160.78 <br />2.32 carbonaceous laminated <br />sandstone <br />light <br />grey /bro <br />160.78 <br />161.52 <br />0.74 <br />siltstone /sandstone <br />light <br />grey <br />161.52 <br />162.41 <br />0.89 sandy <br />siltstone /mudstone <br />light <br />grey <br />162.41 <br />162.56 <br />0.15 <br />siderite <br />light <br />black <br />162.56 <br />162.71 <br />0.15 <br />siltstone /mudstone <br />light <br />grey /bro <br />162.71 <br />170.10 <br />7.39 silty <br />mudstone <br />grey <br />170.10 <br />170.89 <br />0.79 interbedded interlaminated <br />siltstone /sandstone <br />light <br />grey <br />170.89 <br />172.27 <br />1.38 silty <br />mudstone <br />grey <br />172.27 <br />173.25 <br />0.99 <br />core loss <br />• <br />173.25 <br />173.99 <br />0.74 <br />mudstone <br />grey <br />173.99 <br />174.93 <br />0.94 clayey <br />siltstone <br />light <br />grey <br />174.93 <br />178.77 <br />3.84 silty <br />mudstone <br />grey <br />178.77 <br />181.58 <br />2.81 interbedded interlaminated <br />siltstone /sandstone <br />light <br />grey <br />181.58 <br />182.32 <br />0.74 clayey <br />siltstone <br />light <br />grey <br />182.32 <br />183.21 <br />0.89 clayey <br />siltstone <br />light <br />grey <br />183.21 <br />191.00 <br />7.79 silty <br />mudstone <br />grey <br />191.00 <br />192.67 <br />1.68 interbedded interlaminated <br />siltstone /sandstone <br />medium <br />grey <br />192.67 <br />193.36 <br />0.69 <br />sandstone <br />light <br />grey <br />193.36 <br />197.11 <br />3.75 interbedded interlaminated <br />siltstone /sandstone <br />light <br />grey <br />197.11 <br />199.28 <br />2.17 interbedded interlaminated <br />sandstone /siltstone <br />light <br />grey <br />199.28 <br />201.15 <br />1.87 interbedded interlaminated <br />mudstone /siltstone <br />light <br />grey <br />201.15 <br />204.70 <br />3.55 silty <br />mudstone <br />grey <br />204.70 <br />205.90 <br />ZZ 1.20 bright <br />coal <br />black <br />205.90 <br />206.50 <br />0.60 <br />carbonaceous mudston <br />dark <br />brown <br />206.50 <br />214.00 <br />X3 7.50 bright <br />coal <br />black <br />214.00 <br />216.60 <br />X4 2.60 bright <br />coal <br />black <br />216.60 <br />217.10 <br />0.50 silty <br />mudstone <br />grey <br />217.10 <br />219.00 <br />1.90 soft sticky <br />mudstone clay rich <br />grey <br />219.00 <br />219.50 <br />0.50 <br />mudstone <br />grey <br />219.50 <br />219.60 <br />0.10 <br />siderite <br />light <br />brown <br />• <br />219.60 <br />221.05 <br />1.45 <br />carbonaceous shale <br />grey <br />Rio Tinto Energy America - Colowyo Mine <br />Page 367 <br />of 1194 <br />