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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 />1, 329, 535.77 <br />349, 007.74 <br />7,37621 887.00 <br />T04N R94W <br />sue......:. <br />35 <br />5A .. <br />Adjusted Depths <br />_� <br />_. <br />From <br />To <br />Seam <br />Thickness <br />Lithologic Qualifiers <br />Lithology Type <br />Shade <br />Color <br />489.00 <br />495.00 <br />6.00 <br />coarsening dow <br />mudstone /siltstone <br />dark <br />grey <br />495.00 <br />510.00 <br />15.00 <br />coarsening dow <br />siltstone /mudstone <br />medium <br />grey <br />510.00 <br />550.50 <br />SI5 <br />40.50 <br />sandstone <br />light <br />grey <br />550.50 <br />552.60 <br />15 <br />2.10 <br />bright <br />coal <br />black <br />552.60 <br />555.30 <br />15 <br />2.70 <br />bright <br />coal <br />black <br />555.30 <br />557.00 <br />1.70 <br />mudstone <br />557.00 <br />569.00 <br />S17 <br />12.00 <br />sandstone <br />light <br />grey <br />569.00 <br />577.70 <br />8.70 <br />mudstone <br />black <br />577.70 <br />581.00 <br />17 <br />3.30 <br />bright <br />coal <br />black <br />581.00 <br />598.00 <br />17.00 <br />mudstone /siltstone <br />medium <br />grey <br />598.00 <br />601.00 <br />3.00 <br />sandstone <br />light <br />grey <br />601.00 <br />613.80 <br />12.80 <br />interbedded <br />mudstone /siltstone <br />medium <br />grey <br />613.80 <br />617.80 <br />J2 <br />4.00 <br />bright <br />coal <br />black <br />617.80 <br />630.00 <br />12.20 <br />mudstone <br />medium <br />grey <br />630.00 <br />633.00 <br />J4 <br />3.00 <br />bright <br />coal <br />black <br />633.00 <br />635.00 <br />2.00 <br />mudstone <br />635.00 <br />636.20 <br />J6 <br />1.20 <br />coal <br />black <br />636.20 <br />644.00 <br />7.80 <br />mudstone /siltstone <br />medium <br />grey <br />644.00 <br />646.00 <br />2.00 <br />sandstone <br />light <br />grey <br />646.00 <br />652.20 <br />6.20 <br />mudstone <br />medium <br />grey <br />652.20 <br />654.50 <br />J8 <br />2.30 <br />coal <br />black <br />654.50 <br />666.00 <br />11.50 <br />clayey <br />mudstone <br />medium <br />grey <br />666.00 <br />667.20 <br />K3 <br />1.20 <br />dull <br />coal <br />black <br />667.20 <br />673.00 <br />5.80 <br />mudstone <br />medium <br />grey <br />673.00 <br />675.50 <br />K5 <br />2.50 <br />bright <br />coal <br />black <br />675.50 <br />678.10 <br />KM <br />2.60 <br />tuff /tonstien <br />buff <br />678.10 <br />680.20 <br />K7 <br />2.10 <br />bright <br />coal <br />black <br />680.20 <br />683.00 <br />2.80 <br />muddy <br />carbonaceous mudston <br />black <br />683.00 <br />683.90 <br />ZZ <br />0.90 <br />bright <br />coal <br />black <br />683.90 <br />687.00 <br />3.10 <br />mudstone <br />687.00 <br />688.60 <br />K9 <br />1.60 <br />bright <br />coal <br />black <br />688.60 <br />698.00 <br />9.40 <br />mudstone <br />medium <br />grey <br />698.00 <br />705.00 <br />SO <br />7.00 <br />sandstone <br />medium <br />grey <br />705.00 <br />716.80 <br />11.80 <br />interbedded <br />mudstone /siltstone <br />medium <br />grey <br />716.80 <br />720.00 <br />L3 <br />3.20 <br />bright <br />coal <br />black <br />720.00 <br />723.50 <br />L5 <br />3.50 <br />bright <br />coal <br />black <br />723.50 <br />726.00 <br />2.50 <br />carbonaceous mudston <br />black <br />• <br />726.00 <br />726.50 <br />ZZ <br />0.50 <br />bright <br />coal <br />black <br />Rio Tinto Energy America - Colowyo Mine <br />Page 286 of 1194 <br />