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Drill Hole Lithology Summary <br />Drill Hole Easting Northing Collar Total Depth T Range Section File <br />C -04 -26 1, 328, 423.80 346, 721.87 7,539.04 785.10 T03N R94W 2 SA <br />Adjusted Depths <br />From To Seam Thickness Lithologic Qualifiers Lithology Type Shade Color <br />Rio Tinto Energy America - Colowyo Mine Page 316 of 1194 <br />471.50 <br />475.60 <br />4.10 <br />ripple- bedded <br />sandstone /siltstone <br />medium <br />grey <br />475.60 <br />485.60 <br />SI7 <br />10.00 <br />carbonaceous <br />sandstone <br />medium <br />grey <br />485.60 <br />495.60 <br />SI7 <br />10.00 <br />carbonaceous <br />sandstone <br />medium <br />grey <br />495.60 <br />502.60 <br />SI7 <br />7.00 <br />carbonaceous <br />sandstone <br />medium , <br />grey <br />502.60 <br />505.60 <br />17 <br />3.00 <br />bright <br />coal <br />black <br />505.60 <br />507.80 <br />17 <br />2.20 <br />bright <br />coal <br />black <br />507.80 <br />508.61 <br />0.81 <br />dull <br />mudstone <br />black <br />508.61 <br />513.97 <br />5.36 <br />mudstone <br />513.97 <br />518.72 <br />4.75 <br />dull <br />argillaceous <br />siltstone <br />black <br />518.72 <br />521.55 <br />2.83 <br />ripple- bedded <br />laminated <br />siltstone <br />medium <br />grey <br />521.55 <br />524.89 <br />3.34 <br />interbedded <br />sandstone /siltstone <br />medium <br />grey <br />524.89 <br />525.80 <br />SJ2 <br />0.91 <br />sandstone <br />medium <br />grey <br />525.80 <br />535.50 <br />SJ2 <br />9.70 <br />laminated <br />sandstone <br />medium <br />grey <br />535.50 <br />536.00 <br />J2 <br />0.50 <br />bright <br />pyritic <br />rashy coal <br />black <br />536.00 <br />538.00 <br />J2 <br />2.00 <br />coal <br />538.00 <br />538.90 <br />J2 <br />0.90 <br />rashy coal <br />• <br />538.90 <br />543.60 <br />4.70 <br />mudstone <br />dark <br />grey <br />543.60 <br />545.00 <br />J4 <br />1.40 <br />coal <br />black <br />545.00 <br />547.53 <br />J6 <br />2.53 <br />coal <br />black <br />547.53 <br />548.00 <br />J6 <br />0.47 <br />rashy coal <br />548.00 <br />549.60 <br />1.60 <br />laminated <br />siltstone <br />dark <br />grey <br />549.60 <br />551.30 <br />1.70 <br />laminated <br />sandstone <br />medium <br />grey <br />551.30 <br />555.00 <br />3.70 <br />siltstone <br />555.00 <br />557.30 <br />J8 <br />2.30 <br />coal <br />black <br />557.30 <br />560.28 <br />2.98 <br />carbonaceous mudston <br />560.28 <br />563.56 <br />3.28 <br />mudstone <br />dark <br />grey <br />563.56 <br />564.15 <br />0.60 <br />laminated <br />siltstone <br />medium <br />grey <br />564.15 <br />569.42 <br />5.26 <br />siltstone <br />569.42 <br />571.76 <br />2.28 <br />sandstone <br />medium <br />grey <br />571.70 <br />572.30 <br />K3 <br />0.60 <br />boney <br />rashy coal <br />572.30 <br />573.70 <br />K3 <br />1.40 <br />coal <br />573.70 <br />574.60 <br />K3 <br />0.90 <br />bright <br />coal <br />black <br />574.60 <br />575.40 <br />0.80 <br />carbonaceous mudston <br />575.40 <br />578.90 <br />3.50 <br />dull <br />mudstone <br />black <br />578.90 <br />582.90 <br />4.00 <br />laminated <br />siltstone /sandstone <br />medium <br />grey <br />582.90 <br />588.30 <br />SK5 <br />5.40 <br />laminated <br />sandstone <br />medium <br />grey <br />588.30 <br />593.00 <br />SK5 <br />4.70 <br />ripple- bedded <br />sandstone /siltstone <br />medium <br />grey <br />• <br />593.00 <br />595.50 <br />K5 <br />2.50 <br />bright <br />coal <br />black <br />Rio Tinto Energy America - Colowyo Mine Page 316 of 1194 <br />