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Drill Hole <br />......... <br />Drill Hole Lithology Summary <br />Easting Northing Collar Total Depth Township Range Section File <br />C -04 -23 <br />max....... <br />1,329,535.77 <br />_ ���.. ..,.,... <br />349,007.74 7,3 76.21 887.00 <br />_.__ ..,,..... <br />T04N R 94W <br />� ,. . <br />35 <br />�� 5A <br />Adjusted Depths <br />_ ............................. <br />From <br />To <br />Seam <br />Thickness Lithologic Qualifiers <br />Lithology Type <br />Shade <br />Color <br />339.90 <br />343.00 <br />3.10 fissile <br />mudstone <br />medium <br />grey <br />343.00 <br />348.00 <br />5.00 clayey <br />mudstone <br />n <br />grey <br />348.00 <br />359.00 <br />11.00 <br />siltstone /mudstone <br />medium <br />grey <br />359.00 <br />366.00 <br />SGA <br />7.00 <br />sandstone <br />light <br />grey <br />366.00 <br />367.93 <br />SGA <br />1.93 salt/pepper lam <br />sandstone <br />medium <br />grey <br />367.93 <br />368.30 <br />0.37 <br />carbonaceous mudston <br />dark <br />grey /bro <br />368.30 <br />368.55 <br />0.25 bright blocky <br />bone <br />black <br />368.55 <br />372.30 <br />GA <br />3.75 <br />coal <br />372.30 <br />372.60 <br />0.30 <br />shaley coal <br />black <br />372.60 <br />377.70 <br />GB <br />5.10 bright blocky <br />coal <br />black <br />377.70 <br />377.80 <br />GB <br />0.10 <br />siltstone <br />grey <br />377.80 <br />380.40 <br />GB <br />2.60 bright blocky <br />coal <br />black <br />380.40 <br />381.00 <br />0.60 <br />carbonaceous mudston <br />dark <br />grey /bro <br />381.00 <br />388.00 <br />7.00 clayey <br />mudstone <br />medium <br />grey <br />388.00 <br />391.00 <br />3.00 <br />siltstone <br />light <br />grey <br />391.00 <br />396.00 <br />5.00 <br />mudstone <br />medium <br />grey <br />396.00 <br />398.00 <br />2.00 <br />sandstone <br />light <br />grey <br />398.00 <br />417.00 <br />19.00 fining down <br />siltstone /mudstone <br />medium <br />grey <br />417.00 <br />418.00 <br />GC <br />1.00 <br />coal <br />black <br />418.00 <br />422.00 <br />4.00 <br />mudstone <br />dark <br />grey <br />422.00 <br />423.00 <br />1.00 <br />carbonaceous mudston <br />dark <br />grey /bro <br />423.00 <br />427.00 <br />4.00 <br />mudstone <br />medium <br />grey <br />427.00 <br />428.00 <br />1.00 <br />carbonaceous mudston <br />dark <br />grey /bro <br />428.00 <br />430.00 <br />2.00 <br />mudstone <br />medium <br />grey <br />430.00 <br />431.00 <br />H0 <br />1.00 <br />coal <br />black <br />431.00 <br />436.00 <br />5.00 <br />mudstone /siltstone <br />medium <br />grey <br />436.00 <br />454.00 <br />18.00 coarsening dow <br />mudstone /siltstone <br />medium <br />grey <br />454.00 <br />457.50 <br />3.50 <br />mudstone <br />457.50 <br />458.00 <br />H2 <br />0.50 <br />coal <br />458.00 <br />459.50 <br />1.50 <br />mudstone <br />459.50 <br />460.00 <br />ZZ <br />0.50 <br />coal <br />460.00 <br />464.00 <br />4.00 <br />mudstone <br />464.00 <br />475.00 <br />11.00 <br />mudstone /siltstone <br />475.00 <br />476.50 <br />H4 <br />1.50 <br />coal <br />black <br />476.50 <br />480.00 <br />3.50 <br />mudstone <br />medium <br />grey <br />480.00 <br />481.00 <br />1.00 <br />siltstone <br />light <br />g <br />481.00 <br />485.50 <br />4.50 <br />mudstone <br />medium <br />grey <br />485.50 <br />489.00 <br />H8 <br />3.50 <br />coal <br />black <br />Rio Tinto Energy America - Colowyo Mine <br />Page 285 of 1194 <br />