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Drill Hole Lithology Summary <br />Dr ill Hole <br />Easting <br />Northing Collar Total Depth <br />Township Ra nge <br />Section File <br />D H -144 <br />�...._ <br />1,332,0 <br />350,012. 7,49 1.00 820.00 <br />T4N R94W <br />36 3C <br />_., <br />Adjusted <br />Depths <br />u,. <br />__........ <br />a_. <br />- <br />From <br />To <br />Seam <br />Thickness Lithologic Qualifiers <br />Lith000gy Type Shade Color <br />0.00 <br />9.80 <br />9.80 <br />undifferentiated stone <br />9.80 <br />9.80 <br />OXID <br />0.00 <br />undifferentiated stone <br />9.80 <br />10.80 <br />1.00 <br />undifferentiated stone <br />10.80 <br />12.00 <br />Y65 <br />1.20 <br />coal <br />12.00 <br />32.50 <br />20.50 <br />undifferentiated stone <br />32.50 <br />33.90 <br />Y55 <br />1.40 <br />coal <br />33.90 <br />60.00 <br />26.10 <br />undifferentiated stone <br />60.00 <br />61.20 <br />Y45 <br />1.20 <br />coal <br />61.20 <br />93.50 <br />32.30 <br />undifferentiated stone <br />93.50 <br />94.00 <br />Y35 <br />0.50 <br />coal <br />94.00 <br />130.10 <br />36.10 <br />undifferentiated stone <br />130.10 <br />131.30 <br />Y25 <br />1.20 <br />coal <br />131.30 <br />201.60 <br />70.30 <br />undifferentiated stone <br />201.60 <br />203.00 <br />X1 <br />1.40 <br />coal <br />203.00 <br />204.60 <br />1.60 <br />undifferentiated stone <br />204.60 <br />212.00 <br />X3 <br />7.40 <br />coal <br />• <br />212.00 <br />214.50 <br />X4 <br />2.50 <br />coal <br />214.50 <br />220.50 <br />6.00 <br />undifferentiated stone <br />220.50 <br />221.20 <br />X5 <br />0.70 <br />coal <br />221.20 <br />247.50 <br />26.30 <br />undifferentiated stone <br />247.50 <br />249.10 <br />Al <br />1.60 <br />coal <br />249.10 <br />258.00 <br />8.90 <br />undifferentiated stone <br />258.00 <br />259.40 <br />A2 <br />1.40 <br />coal <br />259.40 <br />286.00 <br />26.60 <br />undifferentiated stone <br />286.00 <br />294.50 <br />SB1 <br />8.50 <br />sandstone <br />294.50 <br />296.20 <br />B1 <br />1.70. <br />coal <br />296.20 <br />298.30 <br />2.10 <br />undifferentiated stone <br />298.30 <br />301.00 <br />B2 <br />2.70 <br />coal <br />301.00 <br />303.00 <br />2.00 <br />undifferentiated stone <br />303.00 <br />304.30 <br />B3 <br />1.30 <br />coal <br />304.30 <br />323.50 <br />19.20 <br />undifferentiated stone <br />323.50 <br />326.00 <br />C3 <br />2.50 <br />coal <br />326.00 <br />329.50 <br />C5 <br />3.50 <br />coal <br />329.50 <br />335.50 <br />6.00 <br />undifferentiated stone <br />335.50 <br />337.10 <br />C7 <br />1.60 <br />coal <br />337.10 <br />349.00 <br />11.90 <br />undifferentiated stone <br />349.00 <br />359.00 <br />SDI <br />10.00 <br />sandstone <br />359.00 <br />373.60 <br />14.60 <br />undifferentiated stone <br />. <br />Rio Tinto Energy America - Colowyo Mine <br />Page 998 of 1194 <br />