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0 <br />Rio Tinto Energy America - Colowyo Mine Page 48 of H94 <br />From <br />To <br />Seam <br />Thickness Lithologic Qualifiers <br />Lithology Type Shade Color <br />1036.40 <br />1038.00 <br />1.60 <br />undifferentiated stone <br />1038.00 <br />1074.00 <br />SO <br />36.00 <br />sandstone <br />1074.00 <br />1080.00 <br />6.00 <br />undifferentiated stone <br />1080.00 <br />1081.00 <br />L3 <br />1.00 <br />coal <br />1081.00 <br />1083.40 <br />2.40 <br />undifferentiated stone <br />1083.40 <br />1091.90 <br />L5 <br />8.50 <br />coal <br />1091.90 <br />1093.00 <br />1.10 <br />undifferentiated stone <br />1093.00 <br />1094.00 <br />L7 <br />1.00 <br />coal <br />1094.00 <br />1101.00 <br />7.00 <br />undifferentiated stone <br />1101.00 <br />1129.00 <br />SM3 <br />28.00 <br />sandstone <br />1129.00 <br />1139.00 <br />10.00 <br />undifferentiated stone <br />1139.00 <br />1145.50 <br />M3 <br />6.50 <br />coal <br />1145.50 <br />1146.60 <br />1.10 <br />undifferentiated stone <br />1146.60 <br />1147.90 <br />M5 <br />1.30 <br />coal <br />1147.90 <br />1149.00 <br />1.10 <br />undifferentiated stone <br />1149.00 <br />1151.10 <br />M7 <br />2.10 <br />coal <br />1151.10 <br />1159.80 <br />8.70 <br />undifferentiated stone <br />1159.80 <br />1162.00 <br />N3 <br />2.20 <br />coal <br />1162.00 <br />1196.00 <br />34.00 <br />undifferentiated stone <br />1196.00 <br />1199.20 <br />N5 <br />3.20 <br />coal <br />1199.20 <br />1200.20 <br />N7 <br />1.00 <br />coal <br />1200.20 <br />1204.00 <br />3.80 <br />undifferentiated stone <br />1204.00 <br />1205.00 <br />03 <br />1.00 <br />coal <br />1205.00 <br />1222.50 <br />17.50 <br />undifferentiated stone <br />1222.50 <br />1223.70 <br />TC <br />1.20 <br />coal <br />1223.70 <br />1223.70 <br />TCT <br />0.00 <br />undifferentiated stone <br />1223.70 <br />1282.00 <br />STCM <br />58.30 <br />sandstone <br />0 <br />Rio Tinto Energy America - Colowyo Mine Page 48 of H94 <br />