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Dr ill Hole <br />Drill Hole Lithology Summary <br />Easting N o r thing Colla Total Depth Township Range <br />Section File <br />C -06 -06 <br />1,329,990.21 <br />......... _ ._..... <br />350,807.64 7,267.71 943.00 <br />_ _._ .. <br />T04N R94W <br />35 <br />5C <br />Adjusted <br />Depths <br />From <br />To <br />Seam <br />Thickness Lithologic Qualifiers <br />Lithology Type <br />Shade <br />Color <br />253.05 <br />255.05 <br />F5 <br />2.00 moderately brig occ pyrite <br />coal <br />255.05 <br />256.65 <br />F6 <br />1.60 <br />coal <br />256.65 <br />257.15 <br />F6 <br />0.50 <br />rashy coal <br />257.15 <br />257.65 <br />0.50 <br />carbonaceous mudston <br />dark <br />brown <br />257.65 <br />258.00 <br />ZZ <br />0.35 <br />coal <br />black <br />258.00 <br />259.00 <br />1.00 <br />carbonaceous mudston <br />dark <br />brown <br />259.00 <br />262.00 <br />3.00 <br />mudstone /siltstone <br />262.00 <br />283.50 <br />21.50 <br />mudstone /sandstone <br />283.50 <br />284.05 <br />F7 <br />0.55 <br />coal <br />black <br />284.05 <br />285.20 <br />1.15 carbonaceous <br />mudstone /coal <br />285.20 <br />286.60 <br />F9 <br />1.40 <br />coal <br />black <br />286.60 <br />290.00 <br />3.40 <br />mudstone <br />dark <br />grey <br />290.00 <br />293.00 <br />3.00 <br />sandstone <br />light <br />grey <br />293.00 <br />296.30 <br />3.30 interbedded <br />sandstone /mudstone <br />296.30 <br />300.00 <br />3.70 <br />sandstone <br />light <br />grey <br />300.00 <br />315.00 <br />15.00 interbedded <br />sandstone /mudstone <br />• <br />315.00 <br />316.70 <br />1.70 planar- bedded <br />mudstone <br />316.70 <br />319.80 <br />FA <br />3.10 moderately brig <br />coal <br />319.80 <br />329.08 <br />FB <br />9.28 moderately brig <br />coal <br />329.08 <br />330.10 <br />1.02 carbonaceous <br />mudstone /coal <br />330.10 <br />337.95 <br />G7 <br />7.85 <br />coal <br />337.95 <br />338.95 <br />1.00 carbonaceous <br />mudstone /coal <br />338.95 <br />340.20 <br />1.25 <br />carbonaceous mudston <br />very dark <br />brown <br />340.20 <br />345.00 <br />4.80 <br />mudstone <br />medium- <br />grey <br />345.00 <br />352.00 <br />7.00 <br />sandstone <br />light <br />grey <br />352.00 <br />370.00 <br />18.00 interbedded <br />sandstone /mudstone <br />370.00 <br />417.00 <br />47.00 <br />sandstone <br />light <br />grey <br />417.00 <br />419.00 <br />2.00 <br />carbonaceous mudston <br />dark <br />brown <br />419.00 <br />420.20 <br />1.20 <br />sandstone /mudstone <br />420.20 <br />421.45 <br />1.25 <br />mudstone <br />medium- <br />grey <br />421.45 <br />422.70 <br />1.25 coaly <br />carbonaceous mudston <br />422.70 <br />423.20 <br />GA <br />0.50 moderately brig <br />rashy coal <br />423.20 <br />426.40 <br />GA <br />3.20 <br />coal <br />426.40 <br />426.90 <br />GA <br />0.50 <br />rashy coal <br />426.90 <br />428.85 <br />1.95 coaly <br />carbonaceous mudston <br />428.85 <br />435.95 <br />GB <br />7.10 moderately brig <br />coal <br />black <br />435.95 <br />436.45 <br />0.50 coaly <br />carbonaceous mudston <br />• <br />436.45 <br />437.95 <br />1.50 <br />mudstone <br />medium <br />grey <br />Rio Tinto Energy America - Colowyo Mine <br />Page 683 of 1194 <br />