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Drill Hole Lithology Summary <br />• Drill Hole Easting Northing Collar Total Depth Township Range Section File <br />C -06 -09 1 352,603 5 7,322 88 1 082.00 T04N R94W 35 5C <br />Adjusted Depths <br />From To Seam Thickness Lithologic Qualifiers Lithology Type Shade Color <br />Rio Tinto Energy America - Colowyo Mine Page 695 of 1194 <br />469.90 <br />471.50 <br />F7 <br />1.60 <br />coal <br />black <br />471.50 <br />473.40 <br />F9 <br />1.90 <br />coal <br />473.40 <br />505.00 <br />31.60 interbedded <br />sandstone /mudstone <br />505.00 <br />508.00 <br />3.00 <br />sandstone <br />light <br />grey <br />508.00 <br />512.00 <br />4.00 <br />mudstone <br />medium- <br />grey <br />512.00 <br />515.00 <br />3.00 <br />sandstone <br />light <br />grey <br />515.00 <br />517.00 <br />2.00 <br />mudstone <br />dark <br />grey <br />517.00 <br />520.00 <br />3.00 <br />sandstone <br />light <br />grey <br />520.00 <br />524.20 <br />4.20 <br />mudstone <br />dark <br />grey <br />524.20 <br />527.50 <br />FA <br />3.30 <br />coal <br />black <br />527.50 <br />540.60 <br />FB <br />13.10 <br />coal <br />black <br />540.60 <br />543.80 <br />3.20 <br />mudstone <br />dark <br />grey <br />543.80 <br />550.90 <br />G7 <br />7.10 <br />coal <br />black <br />550.90 <br />552.60 <br />1.70 <br />mudstone <br />dark <br />grey <br />552.60 <br />557.80 <br />G8 <br />5.20 <br />coal <br />black <br />557.80 <br />559.80 <br />G9 <br />2.00 <br />coal <br />black <br />• <br />559.80 <br />561.00 <br />1.20 <br />carbonaceous mudston <br />dark <br />brown <br />561.00 <br />563.70 <br />2.70 <br />mudstone <br />dark <br />grey <br />563.70 <br />567.70 <br />GA <br />4.00 <br />coal <br />black <br />567.70 <br />569.30 <br />1.60 <br />mudstone <br />dark <br />grey <br />569.30 <br />570.50 <br />ZZ <br />1.20 <br />coal /mudstone <br />dark <br />brown <br />570.50 <br />578.00 <br />7.50 interbedded <br />mudstone /sandstone <br />578.00 <br />598.50 <br />20.50 <br />sandstone <br />light <br />grey <br />598.50 <br />599.50 <br />ZZ <br />1.00 <br />coal <br />black <br />599.50 <br />602.10 <br />2.60 <br />mudstone <br />dark <br />grey <br />602.10 <br />607.20 <br />GC <br />5.10 <br />coal <br />black <br />607.20 <br />610.20 <br />3.00 <br />mudstone <br />dark <br />grey <br />610.20 <br />610.60 <br />HO <br />0.40 <br />coal <br />black <br />610.60 <br />622.30 <br />11.70 <br />mudstone <br />dark <br />grey <br />622.30 <br />625.20 <br />H2 <br />2.90 <br />coal <br />black <br />625.20 <br />630.00 <br />4.80 <br />mudstone <br />medium <br />grey <br />630.00 <br />640.00 <br />10.00 interbedded <br />sandstone /mudstone <br />640.00 <br />655.20 <br />15.20 <br />sandstone <br />medium- <br />grey <br />655.20 <br />658.20 <br />3.00 <br />carbonaceous mudston <br />dark <br />brown <br />658.20 <br />665.40 <br />7:20 interbedded <br />mudstone /sandstone <br />665.40 <br />675.20 <br />9.80 <br />sandstone <br />light -med <br />grey <br />675.20 <br />677.20 <br />2.00 <br />carbonaceous mudston <br />dark <br />brown <br />• <br />677.20 <br />681.90 <br />4.70 <br />sandstone /mudstone <br />Rio Tinto Energy America - Colowyo Mine Page 695 of 1194 <br />