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Drill Hole Lithology Summaq <br />• Drill Hole Easting Northing Collar Total Depth Township Range Section File <br />C -04 -20 1, 327, 958.35 350, 928.28 7,460.39 857.00 T04N R94W 35 5A <br />Adjusted Depths <br />From To Seam Thickness Lithologic Qualifiers Lith000gy Type Shade Color <br />Rio Tinto Energy America - Colowyo Mine Page 256 of 1194 <br />810.23 <br />812.00 <br />1.77 <br />mudstone <br />medium <br />grey <br />812.00 <br />813.01 <br />J8 <br />1.01 <br />coal <br />black <br />813.01 <br />814.67 <br />1.67 <br />carbonaceous mudston <br />dark <br />grey /bro <br />814.67 <br />816.84 <br />2.17 <br />mudstone <br />medium <br />grey <br />816.84 <br />817.35 <br />0.50 <br />mudstone <br />medium <br />grey <br />817.35 <br />819.57 <br />2.22 interlaminated <br />siltstone /sandstone <br />light <br />grey <br />819.57 <br />820.07 <br />0.50 silty <br />mudstone <br />medium <br />grey <br />820.07 <br />822.70 <br />2.62 <br />sandstone /siltstone <br />light <br />grey <br />822.70 <br />828.35 <br />SK5 <br />5.65 <br />sandstone <br />light <br />grey <br />828.35 <br />830.77 <br />SK5 <br />2.42 <br />sandstone <br />light <br />grey <br />830.77 <br />832.08 <br />SK5 <br />1.31 <br />sandstone <br />light <br />grey <br />832.08 <br />834.05 <br />SK5 <br />1.97 <br />sandstone <br />light <br />grey <br />834.05 <br />836.00 <br />K5 <br />1.95 <br />coal <br />black <br />836.00 <br />836.20 <br />0.20 <br />carbonaceous mudston <br />dark <br />brown <br />836.20 <br />836.55 <br />0.35 <br />mudstone <br />dark <br />brown <br />836.55 <br />838.60 <br />KM <br />2.05 <br />tuff /tonstien <br />light <br />grey /bro <br />• <br />838.60 <br />838.95 <br />0.35 <br />carbonaceous mudston <br />dark <br />grey /bro <br />838.95 <br />840.90 <br />K7 <br />1.95 <br />coal <br />black <br />840.90 <br />841.34 <br />0.44 <br />carbonaceous mudston <br />dark <br />grey /bro <br />841.34 <br />841.56 <br />0.22 <br />mudstone <br />medium <br />grey <br />841.56 <br />841.92 <br />0.35 <br />siltstone <br />medium <br />grey <br />841.92 <br />843.08 <br />1.17 interlaminated <br />sandstone /siltstone <br />medium <br />grey <br />843.08 <br />843.64 <br />0.55 <br />sandstone <br />light <br />grey <br />843.64 <br />846.70 <br />3.07 <br />sandstone <br />light <br />grey <br />846.70 <br />846.97 <br />0.26 interlaminated <br />siltstone /mudstone <br />light <br />grey <br />846.97 <br />847.94 <br />0.97 silty laminated <br />mudstone <br />medium <br />grey <br />847.94 <br />848.49 <br />0.55 <br />carbonaceous mudston <br />dark <br />grey /bro <br />848.49 <br />848.80 <br />0.31 <br />siltstone /sandstone <br />medium <br />grey <br />848.80 <br />857.00 <br />SK9 <br />8.20 <br />sandstone <br />light <br />grey <br />Rio Tinto Energy America - Colowyo Mine Page 256 of 1194 <br />