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• <br />Rio Tinto Energy America - Colowyo Mine Page 961 of 1194 <br />Drill Hole Lithology Summary <br />Drill Hole <br />Easting <br />Northing Collar Total Depth <br />Township Range Section File <br />DH 115 <br />1,329,007.00 <br />353 007 0 7,311 00 600.00 <br />T4N R94W 35 3C <br />Adjusted Depths <br />From <br />To <br />Seam <br />Thickness Lithologic Qualifiers <br />Lithology Type Shade Color <br />345.30 <br />352.00 <br />6.70 <br />undifferentiated stone <br />352.00 <br />357.00 <br />SF3U <br />5.00 <br />sandstone <br />357.00 <br />361.00 <br />4.00 <br />undifferentiated stone <br />361.00 <br />380.00 <br />SF3M <br />19.00 <br />sandstone <br />380.00 <br />386.00 <br />6.00 <br />undifferentiated stone <br />386.00 <br />400.00 <br />SF3L <br />14.00 <br />sandstone <br />400.00 <br />414.40 <br />14.40 <br />undifferentiated stone <br />414.40 <br />415.30 <br />F3 <br />0.90 <br />coal <br />415.30 <br />417.30 <br />2.00 <br />undifferentiated stone <br />417.30 <br />419.00 <br />F5 <br />1.70 <br />coal <br />419.00 <br />420.60 <br />1.60 <br />undifferentiated stone <br />420.60 <br />422.00 <br />F6 <br />1.40 <br />coal <br />422.00 <br />431.00 <br />9.00 <br />undifferentiated stone <br />431.00 <br />460.00 <br />SF7 <br />29.00 <br />sandstone <br />460.00 <br />466.00 <br />6.00 <br />undifferentiated stone <br />466.00 <br />467.00 <br />F7 <br />1.00 <br />coal <br />• <br />467.00 <br />468.90 <br />F9 <br />1.90 <br />coal <br />468.90 <br />479.00 <br />10.10 <br />undifferentiated stone <br />479.00 <br />513.00 <br />SFA <br />34.00 <br />sandstone <br />513.00 <br />515.00 <br />2.00 <br />undifferentiated stone <br />515.00 <br />518.00 <br />FA <br />3.00 <br />coal <br />518.00 <br />530.00 <br />FB <br />12.00 <br />coal <br />530.00 <br />542.40 <br />12.40 <br />undifferentiated stone <br />542.40 <br />545.20 <br />G7 <br />2.80 <br />coal <br />545.20 <br />549.30 <br />G8 <br />4.10 <br />coal <br />549.30 <br />554.50 <br />5.20 <br />undifferentiated stone <br />554.50 <br />555.50 <br />G9 <br />1.00 <br />coal <br />555.50 <br />556.80 <br />1.30 <br />carbonaceous mudston <br />556.80 <br />561.00 <br />GA <br />4.20 <br />coal <br />561.00 <br />565.70 <br />4.70 <br />undifferentiated stone <br />565.70 <br />569.70 <br />GB <br />4.00 <br />coal <br />569.70 <br />574.00 <br />4.30 <br />undifferentiated stone <br />574.00 <br />600.00 <br />SGB <br />26.00 <br />sandstone <br />• <br />Rio Tinto Energy America - Colowyo Mine Page 961 of 1194 <br />