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Drill Hole Lithology Summary <br />Drill Hole Ea sting Northing Collar Total Depth Township Range Section File <br />DH-76-9 1,331,680.00 348,870 00 7,58600 1,300.00 3C <br />Adjusted Depths <br />From To Seam Thickness Lithologic Qualifiers Lithology Type Shade Color <br />Rio Tinto Energy America - Colowyo Mine Page 1066 of 1194 <br />818.30 <br />819.30 <br />ZZ <br />1.00 <br />coal <br />819.30 <br />881.00 <br />61.70 <br />undifferentiated stone <br />881.00 <br />912.90 <br />31.90 <br />sandstone <br />912.90 <br />915.00 <br />J2 <br />2.10 <br />coal <br />915.00 <br />926.60 <br />11.60 <br />undifferentiated stone <br />926.60 <br />931.00 <br />J4 <br />4.40 <br />coal <br />931.00 <br />936.00 <br />5.00 <br />undifferentiated stone <br />936.00 <br />938.40 <br />J6 <br />2.40 <br />coal <br />938.40 <br />943.00 <br />4.60 <br />undifferentiated stone <br />943.00 <br />944.50 <br />ZZ <br />1.50 <br />coal <br />944.50 <br />954.90 <br />10.40 <br />undifferentiated stone <br />954.90 <br />957.70 <br />J8 <br />2.80 <br />coal <br />957.70 <br />967.00 <br />9.30 <br />undifferentiated stone <br />967.00 <br />969.70 <br />K3 <br />2.70 <br />coal <br />969.70 <br />981.00 <br />11.30 <br />undifferentiated stone <br />981.00 <br />983.70 <br />K5 <br />2.70 <br />coal <br />983.70 <br />991.80 <br />8.10 <br />undifferentiated stone <br />991.80 <br />993.40 <br />KM <br />1.60 <br />clay <br />993.40 <br />997.30 <br />K7 <br />3.90 <br />coal <br />997.30 <br />1000.00 <br />2.70 <br />undifferentiated stone <br />1000.00 <br />1001.00 <br />ZZ <br />1.00 <br />coal <br />1001.00 <br />1002.20 <br />1.20 <br />undifferentiated stone <br />1002.20 <br />1006.10 <br />K9 <br />3.90 <br />coal <br />1006.10 <br />1036.00 <br />29.90 <br />undifferentiated stone <br />1036.00 <br />1039.20 <br />L3 <br />3.20 <br />coal <br />1039.20 <br />1040.20 <br />1.00 <br />undifferentiated stone <br />1040.20 <br />1044.00 <br />L5 <br />3.80 <br />coal <br />1044.00 <br />1045.40 <br />1.40 <br />undifferentiated stone <br />1045.40 <br />1046.80 <br />ZZ <br />1.40 <br />coal <br />1046.80 <br />1052.40 <br />5.60 <br />undifferentiated stone <br />1052.40 <br />1058.20 <br />L7 <br />5.80 <br />coal <br />1058.20 <br />1066.00 <br />7.80 <br />undifferentiated stone <br />1066.00 <br />1067.00 <br />M3 <br />1.00 <br />coal <br />1067.00 <br />1069.00 <br />2.00 <br />undifferentiated stone <br />1069.00 <br />1071.70 <br />M5 <br />2.70 <br />coal <br />1071.70 <br />1074.00 <br />2.30 <br />undifferentiated stone <br />1074.00 <br />1075.80 <br />M7 <br />1.80 <br />coal <br />. <br />1075.80 <br />1085.40 <br />9.60 <br />undifferentiated stone <br />Rio Tinto Energy America - Colowyo Mine Page 1066 of 1194 <br />