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• <br />Rio Tinto Energy America - Colowyo Mine Page 738 of 1194 <br />Drill Hole Lithology Summary <br />Drill H ole <br />Easting <br />N o r thing Colla Total Depth <br />Township <br />Range Section File <br />C -06 -19 <br />1,33 0,390.0 9 <br />346,479.91 7,78614 1,060.00 <br />T03_N <br />R94W 2 <br />SC <br />Adjusted Depths <br />From <br />To <br />Seam <br />Thickness Lithologic Qualifiers <br />Lithology Type <br />Shade <br />Color <br />1022.00 <br />1025.30 <br />3.30 clayey <br />mudstone <br />dark <br />grey <br />1025.30 <br />1027.40 <br />03 <br />2.10 moderately brig to dull <br />coal <br />1027.40 <br />1042.20 <br />14.80 common st/ss interlaminated <br />mudstone /siltstone <br />dark <br />grey <br />1042.20 <br />1050.20 <br />8.00 interbedded w/ ms <br />sandstone / mudstone medium -1 <br />grey <br />1050.20 <br />1051.00 <br />TC <br />0.80 moderately brig <br />coal <br />1051.00 <br />1051.00 <br />TCT <br />0.00 <br />1051.00 <br />1060.00 <br />STCM <br />9.00 friable salt/pepper lam <br />sandstone <br />white <br />• <br />Rio Tinto Energy America - Colowyo Mine Page 738 of 1194 <br />