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Drill Hole Lithology Summary <br />Dr ill Hole E asting Northing Collar T otal D epth T ownship Range Section File <br />C -04 -26 1,328,423 346,721.87 7,5 39.04 785.10 T03N R94W 2 5A <br />Adjusted Depths <br />From To Seam Thickness Lithologic Qualifiers Lithology Type Shade Color <br />Rio Tinto Energy America - Colowyo Mine Page 313 of 1194 <br />125.70 <br />128.50 <br />F7 <br />2.80 <br />dull <br />coal <br />black <br />128.50 <br />129.40 <br />0.90 <br />coaly <br />carbonaceous mudston <br />black <br />129.40 <br />133.87 <br />4.47 <br />silty <br />mudstone /siltstone <br />dark <br />grey <br />133.87 <br />134.47 <br />0.60 <br />siderite <br />brown <br />134.47 <br />135.96 <br />1.49 <br />mudstone /siltstone <br />dark <br />grey <br />135.96 <br />137.84 <br />1.89 <br />sandstone <br />light <br />grey <br />137.84 <br />144.60 <br />6.76 <br />interbedded <br />mudstone /sandstone <br />light <br />grey <br />144.60 <br />154.60 <br />SF9 <br />10.00 <br />carbonaceous <br />laminated <br />sandstone <br />light <br />grey <br />154.60 <br />156.50 <br />SF9 <br />1.90 <br />sandstone <br />light <br />grey <br />156.50 <br />158.40 <br />F9 <br />1.90 <br />coal <br />dark <br />black <br />158.40 <br />164.63 <br />6.23 <br />slightly <br />silty <br />mudstone <br />dark <br />grey <br />164.63 <br />166.24 <br />1.61 <br />dull <br />silty <br />mudstone <br />dark <br />brown <br />166.24 <br />171.67 <br />5.43 <br />laminated <br />siltstone <br />medium <br />grey <br />171.67 <br />174.68 <br />3.01 <br />silty <br />laminated <br />siltstone /sandstone <br />medium <br />grey <br />174.68 <br />180.31 <br />5.63 <br />silty <br />laminated <br />siltstone /sandstone <br />medium <br />grey <br />180.31 <br />184.73 <br />4.42 <br />ripple- bedded <br />silty <br />siltstone /mudstone <br />medium <br />grey <br />• <br />184.73 <br />187.44 <br />2.71 <br />ripple- bedded <br />silty <br />siltstone /mudstone <br />medium <br />grey <br />187.44 <br />194.78 <br />7.34 <br />sandy <br />interbedded <br />siltstone /sandstone <br />medium <br />grey <br />194.78 <br />197.80 <br />3.01 <br />mudstone <br />dark <br />197.80 <br />201.11 <br />3.32 <br />siltstone /sandstone <br />light <br />grey <br />201.11 <br />204.83 <br />3.72 <br />mudstone <br />dark <br />grey <br />204.83 <br />214.88 <br />10.05 <br />silty <br />interbedded <br />mudstone <br />dark <br />grey <br />214.88 <br />217.59 <br />2.71 <br />silty <br />interbedded <br />mudstone <br />dark <br />grey <br />217.59 <br />224.93 <br />7.34 <br />interbedded <br />siltstone <br />medium <br />grey <br />224.93 <br />234.98 <br />10.05 <br />bioturbated <br />laminated <br />siltstone <br />medium <br />grey <br />234.98 <br />237.89 <br />2.91 <br />bioturbated <br />laminated <br />siltstone <br />medium <br />grey <br />237.89 <br />239.20 <br />1.31 <br />carbonaceous mudston <br />239.20 <br />239.80 <br />F1 <br />0.60 <br />bright <br />rashy coal <br />dark <br />black <br />239.80 <br />245.00 <br />FA <br />5.20 <br />coal <br />245.00 <br />250.00 <br />FB <br />5.00 <br />bright <br />coal <br />black <br />250.00 <br />253.70 <br />FB <br />3.70 <br />bright <br />coal <br />black <br />253.70 <br />254.30 <br />FB <br />0.60 <br />rashy coal <br />254.30 <br />256.50 <br />2.20 <br />ripple- bedded <br />siltstone <br />dark <br />grey <br />256.50 <br />259.60 <br />G7 <br />3.10 <br />bright <br />coal <br />black <br />259.60 <br />263.60 <br />G7 <br />4.00 <br />dull <br />muddy <br />coal <br />black <br />263.60 <br />272.80 <br />G8 <br />9.20 <br />coal <br />272.80 <br />274.10 <br />G9 <br />1.30 <br />bright <br />coal <br />black <br />• <br />274.10 <br />275.60 <br />1.50 <br />carbonaceous mudston <br />Rio Tinto Energy America - Colowyo Mine Page 313 of 1194 <br />