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• <br />Drill Hole Lithology Summary <br />Dr ill Hole <br />E asting <br />Northing Colla <br />Total Depth <br />Township Range Section File <br />,. C -04 -26 <br />1, 32 8, 423.80 <br />346, 721. 7, 53 9.04 <br />s.� .....,,._._....... <br />785.10 <br />T03N R94W <br />2 <br />5 A <br />Adjusted <br />Depths <br />From <br />To <br />Seam <br />Thickness Lithologic Qualifiers <br />Lithology Type <br />Shade <br />Color <br />595.50 <br />596.00 <br />K5 <br />0.50 <br />rashy coal <br />596.00 <br />598.85 <br />KM <br />2.85 <br />tuff /tonstien <br />light <br />white <br />598.85 <br />600.20 <br />K7 <br />1.35 dull <br />coal <br />black <br />600.20 <br />602.05 <br />K7 <br />1.85 coal assumed <br />core loss <br />602.05 <br />603.15 <br />1.10 <br />carbonaceous mudston <br />dark <br />brown <br />603.15 <br />604.44 <br />1.29 silty <br />laminated <br />siltstone /sandstone <br />604.44 <br />606.00 <br />1.56 dull <br />laminated <br />mudstone <br />black <br />606.00 <br />606.50 <br />K9 <br />0.50 bright <br />rashy coal <br />black <br />606.50 <br />610.80 <br />K9 <br />4.30 <br />coal <br />610.80 <br />613.07 <br />2.27 dull <br />argillaceous <br />siltstone <br />black <br />613.07 <br />618.81 <br />5.73 dull <br />argillaceous <br />siltstone <br />black <br />618.81 <br />620.98 <br />2.17 dull <br />ripple- bedded <br />siltstone <br />black <br />620.98 <br />623.65 <br />2.67 dull <br />ripple- bedded <br />siltstone <br />black <br />623.65 <br />627.90 <br />SU <br />4.25 carbonaceous <br />laminated <br />sandstone <br />medium <br />grey <br />627.90 <br />629.80 <br />L3 <br />1.90 bright <br />coal <br />black <br />629.80 <br />633.20 <br />L3 <br />3.40 bright <br />coal <br />black <br />• <br />633.20 <br />636.03 <br />2.83 laminated <br />siltstone <br />dark <br />brown <br />636.03 <br />639.14 <br />3.11 laminated <br />siltstone <br />dark <br />brown <br />639.14 <br />644.20 <br />SL5 <br />5.06 ripple- bedded <br />sandstone <br />medium <br />grey <br />644.20 <br />645.80 <br />L5 <br />1.60 <br />coal <br />black <br />645.80 <br />649.00 <br />L5 <br />3.20 <br />coal <br />black <br />649.00 <br />656.00 <br />7.00 dull <br />silty <br />carbonaceous mudston <br />black <br />656.00 <br />659.40 <br />3.40 ripple- bedded <br />sandstone /siltstone <br />medium <br />grey <br />659.40 <br />660.40 <br />L7 <br />1.00 <br />coal <br />660.40 <br />661.35 <br />0.95 dull <br />carbonaceous shale <br />black <br />661.35 <br />664.10 <br />2.75 dull <br />laminated <br />siltstone <br />black <br />664.10 <br />665.60 <br />M3 <br />1.50 dull <br />coal <br />black <br />665.60 <br />666.19 <br />0.59 <br />carbonaceous mudston <br />666.19 <br />666.38 <br />0.20 <br />carbonaceous mudston <br />666.38 <br />672.16 <br />5.78 ripple- bedded <br />laminated <br />siltstone /sandstone <br />medium <br />grey <br />672.16 <br />675.00 <br />2.84 dull <br />laminated <br />mudstone <br />black <br />675.00 <br />675.80 <br />M5 <br />0.80 bright <br />coal <br />black <br />675.80 <br />677.80 <br />M5 <br />2.00 boney <br />pyritic <br />coal <br />black <br />677.80 <br />681.30 <br />3.50 ripple- bedded <br />siltstone <br />light <br />grey <br />681.30 <br />682.20 <br />M7 <br />0.90 <br />coal <br />black <br />682.20 <br />685.18 <br />2.97 dull <br />carbonaceous mudston <br />black <br />685.18 <br />686.77 <br />1.59 dull <br />carbonaceous mudston <br />black <br />• <br />686.77 <br />695.80 <br />9.03 laminated <br />siltstone <br />dark <br />grey <br />Rio Tinto Energy America - Colowyo Mine <br />Page 317 of 1194 <br />