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Drill Hole Lithology Summary <br />• <br />Drill Hole <br />Easting <br />Northing Collar Total Depth <br />Township Range Section File <br />C -04 -32 <br />1,331,73690 <br />349,874.09 7,519.23. 1,041.90 �� <br />Y9 ::'.. «.,. " <br />T04N R94W <br />�:.M..1. '^aY . «! ....... <br />36 <br />'�'.. - ---- <br />5B <br />Adjusted Depths <br />. ..P,Y <br />..�@uS:. .¢....4 ..... .. .. ._. ..w,n <br />...:F <br />. <br />From <br />To <br />Seam <br />Thickness Lithologic Qualifiers <br />Lithology Type <br />Shade <br />Color <br />74.85 <br />75.10 <br />0.25 silty <br />mudstone <br />grey <br />75.10 <br />75.81 <br />0.71 clayey sandy <br />siltstone <br />grey <br />.75.81 <br />77.80 <br />1.99 carbonaceous <br />mudstone clay rich <br />light <br />grey /bro <br />77.80 <br />78.25 <br />0.45 silty <br />mudstone <br />grey <br />78.25 <br />78.55 <br />Y35 <br />0.30 bright broken <br />coal <br />black <br />78.55 <br />82.15 <br />3.60 weathered <br />mudstone <br />grey <br />82.15 <br />83.40 <br />1.25 muddy interbedded <br />sandstone /mudstone <br />light <br />grey <br />83.40 <br />86.70 <br />3.30 silty weathered <br />sandstone <br />light <br />orange <br />86.70 <br />93.10 <br />6.40 silty <br />sandstone <br />light <br />orange <br />93.10 <br />93.30 <br />0.20 clayey <br />mudstone <br />grey <br />93.30 <br />93.45 <br />0.15 <br />tuff /tonstien <br />light <br />grey /bro <br />93.45 <br />98.50 <br />5.05 silty <br />mudstone <br />light <br />grey <br />98.50 <br />99.00 <br />ZZ <br />0.50 bright <br />coal <br />black <br />99.00 <br />99.30 <br />0.30 carbonaceous <br />mudstone <br />grey <br />99.30 <br />101.15 <br />1.85 silty <br />mudstone <br />grey <br />101.15 <br />101.60 <br />0.45 sandy <br />siltstone <br />light <br />grey <br />• <br />101.60 <br />107.80 <br />SY25 <br />6.20 <br />sandstone <br />light <br />grey <br />107.80 <br />112.00 <br />4.20 silty <br />mudstone <br />grey <br />112.00 <br />113.00 <br />1.00 soft <br />mudstone clay rich <br />grey <br />113.00 <br />115.65 <br />2.65 silty <br />mudstone <br />grey <br />115.65 <br />116.10 <br />0.45 clayey <br />siltstone <br />grey <br />116.10 <br />116.50 <br />0.40 silty <br />sandstone <br />light <br />grey <br />116.50 <br />119.10 <br />2.60 sandy <br />siltstone <br />light <br />grey <br />119.10 <br />120.65 <br />1.55 clayey <br />siltstone <br />light <br />grey <br />120.65 <br />122.80 <br />2.15 silty <br />mudstone clay rich <br />grey <br />122.80 <br />125.65 <br />2.85 interbedded interlaminated <br />siltstone /mudstone <br />light <br />grey <br />125.65 <br />128.10 <br />2.45 <br />mudstone clay rich <br />grey <br />128.10 <br />129.30 <br />1.20 sandy <br />siltstone <br />light <br />grey <br />129.30 <br />129.80 <br />0.50 <br />mudstone <br />light <br />grey /bro <br />129.80 <br />130.15 <br />0.35 clayey <br />siltstone <br />light <br />grey <br />130.15 <br />132.35 <br />2.20 silty <br />mudstone <br />grey <br />132.35 <br />133.90 <br />1.55 interbedded interlaminated <br />siltstone /mudstone <br />light <br />grey <br />133.90 <br />135.35 <br />Y25 <br />1.45 bright <br />coal <br />black <br />135.35 <br />135.89 <br />0.54 coaly <br />carbonaceous mudston <br />dark <br />brown <br />135.89 <br />141.13 <br />5.23 <br />mudstone <br />grey <br />141.13 <br />142.79 <br />1.67 silty <br />mudstone <br />grey <br />142.79 <br />142.89 <br />0.10 <br />siltstone <br />light <br />grey <br />. <br />142.89 <br />143.88 <br />0.99 <br />core loss <br />Rio Tinto Energy America - Colowyo Mine <br />Page 366 of 1194 <br />