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r � <br />L_J <br />Rio Tinto Energy America - Colowyo Mine Page 775 of 1194 <br />Drill Hole Lithology Summary <br />• <br />Dr ill Hole <br />Easting <br />Northing <br />Collar Total Depth <br />Township Range Section File <br />C <br />1, 32 6, 760.43 <br />342, 779.0 <br />7,8 82.91 660.00 <br />T03N R94W 11 <br />SC <br />A djusted Depths <br />From <br />To <br />Seam <br />Thickness <br />Lithologic Qualifiers <br />Lithology Type <br />Shade <br />Color <br />496.80 <br />498.00 <br />1.20 <br />carbonaceous mudston <br />498.00 <br />503.50 <br />L5 <br />5.50 <br />moderately brig <br />coal <br />503.50 <br />505.30 <br />L5 <br />1.80 <br />moderately dull <br />boney coal <br />505.30 <br />505.80 <br />0.50 <br />coaly <br />carbonaceous mudston <br />black <br />505.80 <br />506.30 <br />L7 <br />0.50 <br />moderately brig <br />coal <br />506.30 <br />513.00 <br />6.70 <br />mudstone /siltstone <br />medium <br />grey <br />513.00 <br />529.30 <br />16.30 <br />salt/pepper ban <br />sandstone <br />grey <br />529.30 <br />531.20 <br />M3 <br />1.90 <br />moderately brig <br />coal <br />531.20 <br />536.00 <br />4.80 <br />mudstone /siltstone <br />medium <br />grey <br />536.00 <br />537.05 <br />M5 <br />1.05 <br />moderately brig <br />coal <br />537.05 <br />546.00 <br />8.95 <br />muddy <br />sandstone /siltstone <br />grey <br />546.00 <br />549.80 <br />3.80 <br />mudstone <br />medium <br />grey <br />549.80 <br />552.50 <br />M7 <br />2.70 <br />moderately brig <br />coal <br />552.50 <br />556.20 <br />3.70 <br />mudstone <br />medium <br />grey <br />556.20 <br />557.70 <br />N1 <br />1.50 <br />moderately brig <br />coal <br />557.70 <br />560.10 <br />2.40 <br />carbonaceous mudston <br />dark <br />grey <br />• <br />560.10 <br />561.90 <br />N3 <br />1.80 <br />moderately brig <br />coal <br />561.90 <br />570.50 <br />8.60 <br />mudstone /siltstone <br />medium <br />grey <br />570.50 <br />571.90 <br />N5 <br />1.40 <br />dull <br />boney coal <br />571.90 <br />573.10 <br />N7 <br />1.20 <br />moderately brig <br />coal <br />573.10 <br />577.50 <br />4.40 <br />silty <br />mudstone <br />grey <br />577.50 <br />583.50 <br />6.00 <br />siltstone /sandstone <br />medium <br />grey <br />583.50 <br />599.60 <br />16.10 <br />carby bands w/ dark grey <br />mudstone <br />medium <br />grey <br />599.60 <br />601.10 <br />01 <br />1.50 <br />moderately brig <br />coal <br />601.10 <br />603.50 <br />2.40 <br />silty <br />sandstone <br />medium <br />grey <br />603.50 <br />605.90 <br />03 <br />2.40 <br />moderately brig <br />coal <br />605.90 <br />628.00 <br />22.10 <br />interbedded muddy <br />siltstone /sandstone <br />medium- <br />grey <br />628.00 <br />628.60 <br />TC <br />0.60 <br />boney coal <br />628.60 <br />628.60 <br />TCT <br />0.00 <br />628.60 <br />660.00 <br />STCM <br />31.40 <br />sandstone <br />white <br />r � <br />L_J <br />Rio Tinto Energy America - Colowyo Mine Page 775 of 1194 <br />