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Drill Hole Lithology Summary <br />• <br />Drill Hole <br />Easting <br />Northing Collar Total Depth <br />Township <br />Range Section File <br />C-0 <br />1 329,548.31 <br />344,729.42 7,880.67 808.00 <br />T03N <br />R94W 2 <br />5C <br />Adjusted Depths <br />From <br />To <br />Seam <br />Thickness Lithologic Qualifiers <br />Lithology Type <br />Shade <br />Color <br />0.00 <br />5.50 <br />5.50 abundant iron oxide <br />sandstone /siltstone <br />pale <br />yellow /or <br />5.50 <br />7.70 <br />B1 <br />2.20 oxidized dusty <br />coal <br />dull <br />black <br />7.70 <br />10.20 <br />B2 <br />2.50 oxidized dusty <br />coal <br />dull <br />black <br />10.20 <br />24.00 <br />13.80 oxidized <br />mudstone /siltstone <br />pale <br />yellow /gr <br />24.00 <br />36.00 <br />12.00 oxidized <br />mudstone <br />pale <br />yellow /gr <br />36.00 <br />40.00 <br />4.00 oxidized <br />mudstone /siltstone <br />pale <br />yellow /gr <br />40.00 <br />40.00 <br />OXID <br />0.00 <br />40.00 <br />60.60 <br />20.60 abundant iron oxide <br />sandstone <br />pale <br />yellow /gr <br />60.60 <br />76.10 <br />15.50 abundant iron oxide <br />mudstone /siltstone <br />pale <br />yellow /gr <br />76.10 <br />82.00 <br />C3 <br />5.90 burn altered <br />burned coal <br />dull <br />black -gr <br />82.00 <br />83.20 <br />BRN <br />1.20 burn altered <br />mudstone <br />reddish - <br />83.20 <br />86.10 <br />C5 <br />2.90 burn altered <br />burned coal <br />dull <br />black <br />86.10 <br />185.00 <br />BRN <br />98.90 clinker <br />clinker /burn <br />red /oran <br />185.00 <br />185.00 <br />OXID <br />0.00 <br />185.00 <br />194.00 <br />9.00 interbedded <br />siltstone /sandstone <br />medium <br />grey <br />194.00 <br />206.00 <br />12.00 massive <br />sandstone <br />medium <br />grey <br />• <br />206.00 <br />237.30 <br />31.30 silty hard <br />mudstone /siltstone <br />medium- <br />grey <br />237.30 <br />240.90 <br />F3 <br />3.60 moderately brig <br />coal <br />240.90 <br />267.30 <br />26.40 silty <br />mudstone /siltstone <br />medium- <br />grey <br />267.30 <br />273.10 <br />F5 <br />5.80 <br />coal <br />273.10 <br />273.90 <br />0.80 clayey <br />mudstone <br />medium- <br />grey <br />273.90 <br />277.00 <br />F6 <br />3.10 moderately brig <br />coal <br />277.00 <br />281.20 <br />4.20 clayey <br />mudstone <br />medium- <br />grey <br />281.20 <br />283.70 <br />F7 <br />2.50 moderately brig <br />coal <br />283.70 <br />288.00 <br />4.30 <br />mudstone <br />medium- <br />grey <br />288.00 <br />291.00 <br />3.00 <br />siltstone <br />medium <br />grey <br />291.00 <br />295.00 <br />4.00 <br />mudstone <br />medium- <br />grey <br />295.00 <br />298.10 <br />F9 <br />3.10 moderately brig <br />coal <br />298.10 <br />337.30 <br />39.20 interbedded <br />mudstone /siltstone <br />medium- <br />grey <br />337.30 <br />345.30 <br />FA <br />8.00 moderately brig <br />coal <br />345.30 <br />351.60 <br />6.30 clayey <br />mudstone <br />dark <br />brown <br />351.60 <br />358.60 <br />FB <br />7.00 moderately brig <br />coal <br />358.60 <br />366.00 <br />G7 <br />7.40 moderately brig <br />coal <br />366.00 <br />374.00 <br />G8 <br />8.00 moderately brig <br />coal <br />374.00 <br />377.20 <br />G9 <br />3.20 moderately brig <br />coal <br />377.20 <br />378.20 <br />1.00 clayey <br />mudstone <br />dark <br />brown <br />378.20 <br />382.90 <br />GA <br />4.70 moderately brig <br />coal <br />• <br />382.90 <br />399.80 <br />16.90 hard <br />mudstone /siltstone <br />medium <br />grey <br />Rio Tinto Energy America - Colowyo Mine <br />Page <br />754 of 1194 <br />