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Drill Hole Lithology Summary <br />Drill Hole Easting Northing Collar Total Depth Township Range Section File <br />C -04 -23 1,329,535.77 349,0 7,37621 887.00 T04N R94W 3 5A <br />Adjusted Depths <br />From To Seam Thickness Lithologic Qualifiers Lithology Type Shade Color <br />• <br />• <br />726.50 <br />748.50 <br />22.00 <br />coarsening dow <br />mudstone /siltstone <br />medium <br />grey <br />748.50 <br />750.50 <br />L7 <br />2.00 <br />coal <br />black <br />750.50 <br />771.80 <br />21.30 <br />coarsening dow <br />siltstone /sandstone <br />light <br />grey <br />771.80 <br />774.20 <br />M5 <br />2.40 <br />coal <br />black <br />774.20 <br />798.00 <br />23.80 <br />siltstone /mudstone <br />medium <br />grey <br />798.00 <br />803.00 <br />5.00 <br />sandstone <br />light <br />grey <br />803.00 <br />806.50 <br />3.50 <br />siltstone /mudstone <br />medium <br />grey <br />806.50 <br />809.00 <br />N1 <br />2.50 <br />coal <br />809.00 <br />811.00 <br />N3 <br />2.00 <br />bright <br />coal <br />black <br />811.00 <br />813.00 <br />2.00 <br />carbonaceous mudston <br />light <br />black <br />813.00 <br />820.00 <br />7.00 <br />mudstone <br />820.00 <br />822.50 <br />2.50 <br />sandstone <br />822.50 <br />827.00 <br />4.50 <br />siltstone <br />827.00 <br />828.40 <br />01 <br />1.40 <br />coal <br />828.40 <br />830.50 <br />2.10 <br />mudstone <br />medium <br />grey <br />830.50 <br />833.10 <br />03 <br />2.60 <br />coal <br />833.10 <br />842.00 <br />8.90 <br />mudstone <br />medium <br />grey <br />842.00 <br />845.00 <br />3.00 <br />sandstone <br />light <br />grey <br />845.00 <br />848.00 <br />3.00 <br />mudstone <br />medium <br />grey <br />848.00 <br />852.00 <br />4.00 <br />siltstone <br />light <br />grey <br />852.00 <br />854.50 <br />2.50 <br />mudstone /siltstone <br />medium <br />grey <br />854.50 <br />855.00 <br />TC <br />0.50 <br />coal <br />855.00 <br />855.00 <br />TCT <br />0.00 <br />855.00 <br />887.00 <br />STCM <br />32.00 <br />sandstone <br />light <br />grey <br />Rio Tinto Energy America - Colowyo Mine Page 287 of 1194 <br />