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Drill Hole Lithology Summary <br />• <br />Drill Hole <br />Easti <br />Northing Collar Total Depth <br />Township Range <br />Section File <br />C -04 -20 <br />1,3 <br />350,928. 7,460.39 857.00 <br />T04N R94 <br />35 <br />5A <br />Adjusted Depths <br />From <br />To <br />Seam <br />Thickness Lithologic Qualifiers <br />Lithology Type <br />Shade <br />Color <br />127.00 <br />127.30 <br />Al <br />0.30 bright <br />coal <br />black <br />127.30 <br />128.55 <br />Al <br />1.25 bright <br />coal <br />black <br />128.55 <br />132.35 <br />3.80 <br />siltstone <br />medium <br />grey <br />132.35 <br />134.65 <br />2.30 <br />sandstone <br />medium <br />grey <br />134.65 <br />135.10 <br />0.45 <br />siltstone <br />light <br />grey <br />135.10 <br />136.10 <br />1.00 fining down <br />sandstone /siltstone <br />medium <br />grey <br />136.10 <br />140.40 <br />4.30 <br />sandstone <br />medium <br />grey <br />140.40 <br />140.70 <br />0.30 <br />siltstone <br />light <br />grey <br />140.70 <br />142.95 <br />2.25 <br />siltstone <br />light <br />grey <br />142.95 <br />147.30 <br />4.35 <br />sandstone <br />light <br />grey <br />147.30 <br />147.50 <br />0.20 <br />coal <br />black <br />147.50 <br />153.90 <br />6.40 silty <br />mudstone <br />medium <br />grey <br />153.90 <br />154.60 <br />0.70 <br />mudstone /siltstone <br />medium <br />grey <br />154.60 <br />162.48 <br />7.88 silty <br />mudstone <br />medium <br />grey <br />162.48 <br />163.13 <br />0.65 <br />carbonaceous mudston <br />dark <br />grey <br />163.13 <br />164.50 <br />1.37 <br />mudstone <br />medium <br />grey <br />• <br />164.50 <br />165.50 <br />1.00 <br />mudstone /siltstone <br />medium <br />grey <br />165.50 <br />167.40 <br />1.90 silty <br />mudstone <br />medium <br />grey <br />167.40 <br />172.20 <br />4.80 <br />siltstone <br />medium <br />grey <br />172.20 <br />172.85 <br />0.65 <br />mudstone <br />medium <br />grey <br />172.85 <br />173.10 <br />0.25 <br />carbonaceous mudston <br />dark <br />grey /bro <br />173.10 <br />174.03 <br />0.93 <br />mudstone <br />dark <br />brown <br />174.03 <br />175.67 <br />1.64 <br />mudstone <br />medium <br />grey /bro <br />175.67 <br />176.80 <br />1.13 <br />mudstone /siltstone <br />light <br />grey <br />176.80 <br />178.00 <br />1.20 <br />mudstone <br />medium <br />grey <br />178.00 <br />179.75 <br />1.75 laminated <br />siltstone /sandstone <br />light <br />grey <br />179.75 <br />182.34 <br />2.59 silty <br />mudstone <br />medium <br />grey <br />182.34 <br />183.90 <br />1.56 <br />mudstone <br />light <br />grey <br />183.90 <br />184.00 <br />0.10 <br />siderite <br />tan <br />184.00 <br />186.03 <br />2.03 <br />mudstone <br />medium <br />grey <br />186.03 <br />186.60 <br />0.57 <br />siltstone <br />medium <br />grey <br />186.60 <br />193.60 <br />7.00 <br />mudstone <br />medium <br />grey <br />193.60 <br />194.60 <br />1.00 <br />mudstone <br />medium <br />grey <br />194.60 <br />195.50 <br />0.90 <br />coal <br />black <br />195.50 <br />195.95 <br />0.45 <br />carbonaceous mudston <br />dark <br />grey /bro <br />195.95 <br />198.00 <br />131 <br />2.05 <br />coal <br />black <br />198.00 <br />201.45 <br />B2 <br />3.45 <br />coal <br />black <br />201.45 <br />201.60 <br />B2 <br />0.15 <br />carbonaceous mudston <br />brown <br />Rio Tinto Energy America - Colowyo Mine <br />Page <br />248 of 1194 <br />