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• <br />Drill Hole <br />Drill Hole Lithology Summary <br />Easting Northing Collar Total Depth Township Range <br />Section File <br />C <br />1,329,5 <br />353,99 7,26 4.21 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 />927.81 <br />928.64 <br />0.83 <br />carbonaceous mudston <br />dark <br />grey /bro <br />928.64 <br />933.17 <br />4.53 <br />siltstone /mudstone <br />medium <br />grey <br />933.17 <br />934.53 <br />1.36 <br />siltstone /mudstone <br />medium <br />grey <br />934.53 <br />936.04 <br />1.51 clayey <br />siltstone <br />light <br />grey <br />936.04 <br />940.72 <br />4.68 interbedded interlaminated <br />sandstone /siltstone <br />light <br />grey <br />940.72 <br />947.00 <br />SK5 <br />6.28 silty <br />sandstone <br />light <br />grey <br />947.00 <br />947.75 <br />K5 <br />0.75 <br />coal <br />black <br />947.75 <br />948.10 <br />K5 <br />0.35 <br />coal <br />black <br />948.10 <br />950.60 <br />KM <br />2.50 <br />tuff /tonstien <br />950.60 <br />953.30 <br />K7 <br />2.70 <br />coal <br />black <br />953.30 <br />955.50 <br />2.20 <br />mudstone <br />955.50 <br />956.80 <br />K9 <br />1.30 <br />coal <br />black <br />956.80 <br />972.00 <br />15.20 <br />mudstone /siltstone <br />972.00 <br />984.50 <br />SO <br />12.50 <br />sandstone <br />984.50 <br />993.80 <br />9.30 <br />mudstone <br />993.80 <br />997.00 <br />L3 <br />3.20 <br />coal <br />black <br />• <br />997.00 <br />999.50 <br />L5 <br />2.50 <br />coal <br />999.50 <br />1000.00 <br />0.50 <br />mudstone <br />1000.00 <br />1005.00 <br />L7 <br />5.00 <br />coal <br />black <br />1005.00 <br />1006.76 <br />1.76 <br />coal /mudstone <br />1006.76 <br />1009.00 <br />2.24 <br />mudstone <br />1009.00 <br />1016.00 <br />7.00 <br />siltstone <br />1016.00 <br />1024.00 <br />8.00 <br />sandstone /mudstone <br />1024.00 <br />1029.00 <br />5.00 <br />undifferentiated stone <br />1029.00 <br />1036.50 <br />7.50 <br />mudstone <br />1036.50 <br />1049.00 <br />12.50 <br />siltstone /mudstone <br />1049.00 <br />1057.40 <br />8.40 <br />mudstone <br />1057.40 <br />1060.40 <br />3.00 <br />sandstone <br />1060.40 <br />1065.50 <br />5.10 <br />mudstone <br />1065.50 <br />1068.70 <br />3.20 <br />sandstone /siltstone <br />1068.70 <br />1087.00 <br />18.30 <br />mudstone /siltstone <br />1087.00 <br />1090.50 <br />3.50 <br />coal /mudstone <br />1090.50 <br />1092.80 <br />M7 <br />2.30 <br />coal <br />1092.80 <br />1101.10 <br />8.30 <br />mudstone <br />1101.10 <br />1103.50 <br />N3 <br />2.40 <br />coal <br />1103.50 <br />1134.50 <br />31.00 <br />mudstone <br />1134.50 <br />1136.70 <br />N5 <br />2.20 <br />coal <br />• <br />1136.70 <br />1139.00 <br />N7 <br />2.30 <br />coal <br />Rio Tinto Energy America - Colowyo Mine <br />Page <br />186 of 1194 <br />