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Drill Hole Lithology Summary <br />• <br />Township Range <br />Section File <br />Drill Hol <br />Easting <br />Northing Collar Total Depth <br />DH-76-9 <br />1, 00 <br />348,870.00 7,58600 1 300 00 <br />3C <br />Adjusted <br />Depths <br />From <br />To <br />Seam <br />Thickness Lithologic Qualifiers <br />Lithology Type Shade Color <br />410.40 <br />420.00 <br />9.60 <br />undifferentiated stone <br />420.00 <br />425.40 <br />F1 <br />5.40 <br />coal <br />425.40 <br />487.00 <br />61.60 <br />undifferentiated stone <br />487.00 <br />518.00 <br />31.00 <br />sandstone <br />518.00 <br />521.80 <br />3.80 <br />undifferentiated stone <br />521.80 <br />525.00 <br />F5 <br />3.20 <br />boney coal <br />525.00 <br />529.10 <br />F6 <br />4.10 <br />coal <br />529.10 <br />543.80 <br />14.70 <br />undifferentiated stone <br />543.80 <br />545.00 <br />F7 <br />1.20 <br />boney coal <br />545.00 <br />563.60 <br />18.60 <br />undifferentiated stone <br />563.60 <br />565.20 <br />F9 <br />1.60 <br />coal <br />565.20 <br />584.00 <br />18.80 <br />undifferentiated stone <br />584.00 <br />588.00 <br />FA <br />4.00 <br />coal <br />588.00 <br />599.70 <br />FB <br />11.70 <br />coal <br />599.70 <br />634.00 <br />34.30 <br />undifferentiated stone <br />634.00 <br />641.60 <br />G7 <br />7.60 <br />coal <br />• <br />641.60 <br />647.00 <br />G8 <br />5.40 <br />coal <br />647.00 <br />649.20 <br />G9 <br />2.20 <br />coal <br />649.20 <br />674.80 <br />25.60 <br />undifferentiated stone <br />674.80 <br />678.00 <br />GA <br />3.20 <br />coal <br />678.00 <br />680.50 <br />2.50 <br />undifferentiated stone <br />680.50 <br />688.20 <br />GB <br />7.70 <br />coal <br />688.20 <br />702.70 <br />14.50 <br />undifferentiated stone <br />702.70 <br />707.00 <br />GC <br />4.30 <br />coal <br />707.00 <br />715.10 <br />8.10 <br />undifferentiated stone <br />715.10 <br />717.00 <br />HO <br />1.90 <br />coal <br />717.00 <br />717.10 <br />0.10 <br />undifferentiated stone <br />717.10 <br />762.20 <br />45.10 <br />undifferentiated stone <br />762.20 <br />763.70 <br />H4 <br />1.50 <br />coal <br />763.70 <br />787.70 <br />24.00 <br />undifferentiated stone <br />787.70 <br />790.10 <br />H8 <br />2.40 <br />coal <br />790.10 <br />790.70 <br />0.60 <br />undifferentiated stone <br />790.70 <br />792.00 <br />13 <br />1.30 <br />coal <br />792.00 <br />806.00 <br />14.00 <br />undifferentiated stone <br />806.00 <br />807.20 <br />15 <br />1.20 <br />coal <br />807.20 <br />809.60 <br />2.40 <br />undifferentiated stone <br />809.60 <br />816.50 <br />17 <br />6.90 <br />coal <br />• <br />816.50 <br />818.30 <br />1.80 <br />undifferentiated stone <br />Rio Tinto Energy America - Colowyo Mine <br />Page 1065 of 1194 <br />