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Drill Hole Lithology Summary <br />• <br />Drill Hole <br />Easting <br />Northing Collar Total Depth <br />Township Range <br />Section File <br />C-04-20 <br />1 327 958 35 <br />350,928 28 7,460.39 857 00 <br />T04N R94W <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 />482.50 <br />484.40 <br />1.90 interbedded <br />siltstone /sandstone <br />medium <br />grey <br />484.40 <br />484.95 <br />0.55 silty <br />mudstone <br />medium <br />grey <br />484.95 <br />486.15 <br />1.20 <br />siltstone <br />medium <br />grey <br />486.15 <br />487.70 <br />1.55 silty <br />mudstone <br />medium <br />grey <br />487.70 <br />491.15 <br />3.45 <br />mudstone <br />medium <br />grey <br />491.15 <br />492.80 <br />1.65 sandy laminated <br />siltstone <br />medium <br />grey <br />492.80 <br />495.10 <br />2.30 silty <br />mudstone <br />medium <br />grey <br />495.10 <br />500.50 <br />5.40 interbedded <br />siltstone /sandstone <br />medium <br />grey <br />500.50 <br />502.85 <br />2.35 <br />mudstone <br />medium <br />grey <br />502.85 <br />503.50 <br />0.65 <br />mudstone <br />medium <br />grey <br />503.50 <br />504.10 <br />0.60 siderite <br />siltstone <br />medium <br />grey <br />504.10 <br />510.30 <br />6.20 carbonaceous laminated <br />mudstone <br />medium <br />grey <br />510.30 <br />510.60 <br />0.30 <br />carbonaceous mudston <br />dark <br />grey <br />510.60 <br />514.30 <br />FA <br />3.70 bright <br />coal <br />black <br />514.30 <br />525.50 <br />FB <br />11.20 bright <br />coal <br />black <br />525.50 <br />528.40 <br />2.90 coaly laminated <br />carbonaceous mudston <br />dark <br />grey <br />528.40 <br />535.00 <br />G7 <br />6.60 bright <br />coal <br />black <br />535.00 <br />541.45 <br />G8 <br />6.45 bright <br />coal <br />black <br />541.45 <br />543.20 <br />G9 <br />1.75 <br />coal <br />543.20 <br />543.61 <br />0.41 <br />carbonaceous mudston <br />dark <br />grey /bro <br />543.61 <br />546.86 <br />3.25 silty <br />mudstone <br />medium <br />grey <br />546.86 <br />547.62 <br />0.76 <br />core loss <br />547.62 <br />547.82 <br />0.20 <br />carbonaceous mudston <br />dark <br />grey <br />547.82 <br />550.51 <br />2.69 silty <br />mudstone <br />medium <br />grey <br />550.51 <br />552.44 <br />1.93 interbedded <br />siltstone /sandstone <br />medium <br />grey <br />552.44 <br />562.91 <br />10.46 <br />mudstone <br />medium <br />grey <br />562.91 <br />566.00 <br />3.10 silty <br />mudstone <br />medium <br />grey <br />566.00 <br />568.09 <br />2.08 interlaminated <br />siltstone /sandstone <br />medium <br />grey <br />568.09 <br />568.90 <br />0.81 <br />mudstone <br />medium <br />grey <br />568.90 <br />571.50 <br />GA <br />2.60 bright <br />coal <br />black <br />571.50 <br />572.00 <br />GA <br />0.50 <br />rashy coal <br />572.00 <br />572.35 <br />0.35 <br />carbonaceous mudston <br />dark <br />grey /bro <br />572.35 <br />575.35 <br />3.00 <br />mudstone <br />medium <br />grey <br />575.35 <br />577.50 <br />2.15 silty <br />mudstone /siltstone <br />medium <br />grey <br />577.50 <br />579.00 <br />1.50 <br />mudstone <br />medium <br />grey <br />579.00 <br />579.65 <br />0.65 <br />carbonaceous shale <br />dark <br />grey <br />579.65 <br />579.90 <br />0.25 <br />carbonaceous mudston <br />dark <br />grey <br />• <br />579.90 <br />584.40 <br />GB <br />4.50 bright <br />coal <br />black <br />Rio Tinto Energy America - Colowyo Mine <br />Page <br />252 of 1194 <br />