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Drill Hole Lithology Summary <br />Drill Hole Easting Northing Collar Total Depth Township Range Section File <br />C -04 -32 1,331,73690 349,87 7,519.23 1,041.90 T04N R94W 36 5B <br />Adjusted Depths <br />From To Seam Thickness Lithologic Qualifiers Lithology Type Shade Color <br />Rio Tinto Energy America - Colowyo Mine Page 371 of 1194 <br />391.81 <br />393.04 <br />1.23 <br />silty <br />mudstone <br />grey <br />393.04 <br />393.14 <br />0.10 <br />coal <br />black <br />393.14 <br />396.78 <br />3.64 <br />sandy <br />siltstone <br />light <br />grey <br />396.78 <br />411.95 <br />15.17 <br />sandy <br />interbedded <br />sandstone /siltstone <br />light <br />grey <br />411.95 <br />412.36 <br />0.41 <br />sandstone <br />light <br />grey <br />412.36 <br />414.00 <br />1.64 <br />interbedded <br />siltstone /sandstone <br />light <br />grey <br />414.00 <br />414.71 <br />0.72 <br />carbonaceous mudston <br />medium <br />grey <br />414.71 <br />415.28 <br />0.56 <br />sandstone <br />light <br />grey <br />415.28 <br />415.53 <br />0.26 <br />mudstone <br />grey <br />415.53 <br />416.56 <br />1.02 <br />sandstone <br />light <br />grey <br />416.56 <br />416.97 <br />0.41 <br />carbonaceous <br />carbonaceous mudston <br />dark <br />grey <br />416.97 <br />419.33 <br />SE2 <br />2.36 <br />sandstone <br />tight <br />grey <br />419.33 <br />419.84 <br />SE2 <br />0.51 <br />interbedded <br />interlaminated <br />sandstone /mudstone <br />grey <br />419.84 <br />421.12 <br />SE2 <br />1.28 <br />sandstone <br />light <br />grey <br />421.12 <br />422.30 <br />1.18 <br />interbedded <br />interlaminated <br />sandstone /mudstone <br />light <br />grey <br />422.30 <br />423.73 <br />1.44 <br />sandstone <br />light <br />grey <br />423.73 <br />425.99 <br />2.26 <br />interbedded <br />interlaminated <br />sandstone /mudstone <br />light <br />grey <br />425.99 <br />426.81 <br />0.82 <br />sandstone <br />light <br />grey <br />426.81 <br />427.53 <br />0.72 <br />interbedded <br />siltstone /mudstone <br />light <br />grey <br />427.53 <br />428.04 <br />0.51 <br />interbedded <br />siltstone /mudstone <br />light <br />grey <br />428.04 <br />428.50 <br />0.46 <br />silty <br />sandstone <br />light <br />grey <br />428.50 <br />433.95 <br />E2 <br />5.45 <br />bright <br />coal <br />black <br />433.95 <br />434.45 <br />E2 <br />0.50 <br />rashy coal <br />434.45 <br />435.75 <br />1.30 <br />carbonaceous mudston <br />dark <br />brown <br />435.75 <br />436.12 <br />0.37 <br />siderite <br />light <br />grey <br />436.12 <br />436.68 <br />0.56 <br />carbonaceous mudston <br />dark <br />grey <br />436.68 <br />436.86 <br />0.19 <br />siltstone /mudstone <br />grey <br />436.86 <br />438.72 <br />1.85 <br />carbonaceous mudston <br />dark <br />grey <br />438.72 <br />438.99 <br />0.28 <br />claystone <br />grey <br />438.99 <br />440.94 <br />1.95 <br />sandstone /mudstone <br />medium <br />grey <br />440.94 <br />441.78 <br />0.83 <br />mudstone /siltstone <br />grey <br />441.78 <br />442.06 <br />0.28 <br />mudstone <br />grey <br />442.06 <br />442.98 <br />0.93 <br />mudstone /siltstone <br />medium <br />grey <br />442.98 <br />443.40 <br />0.42 <br />carbonaceous mudston <br />dark <br />grey <br />443.40 <br />447.85 <br />F1 <br />4.45 <br />coal <br />black <br />447.85 <br />447.90 <br />F1 <br />0.05 <br />claystone <br />grey <br />447.90 <br />448.65 <br />F1 <br />0.75 <br />coal <br />black <br />• <br />448.65 <br />449.35 <br />0.70 <br />carbonaceous mudston <br />dark <br />grey <br />Rio Tinto Energy America - Colowyo Mine Page 371 of 1194 <br />