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0 <br />488.60 <br />489.10 <br />0.50 clayey <br />boney coal <br />black <br />489.10 <br />489.80 <br />0.70 clayey <br />silty <br />bone <br />black/bro <br />489.80 <br />491.50 <br />1.70 <br />carbonaceous mudston <br />very dark <br />grey <br />491.50 <br />494.00 <br />2.50 <br />siltstone /mudstone <br />dark <br />grey <br />494.00 <br />496.50 <br />2.50 carbonaceous <br />siltstone /sandstone <br />medium- <br />grey <br />496.50 <br />502.50 <br />6.00 <br />mudstone <br />dark <br />grey <br />502.50 <br />507.00 <br />4.50 interbedded <br />silty <br />sandstone /mudstone <br />light <br />grey <br />507.00 <br />512.20 <br />5.20 <br />sandstone <br />light <br />grey <br />512.20 <br />520.85 <br />FB <br />8.65 bright, blocky <br />pyrite coating o <br />coal <br />black <br />520.85 <br />521.50 <br />0.65 coal seams <br />silty <br />bone <br />black/bro <br />521.50 <br />521.80 <br />0.30 muddy <br />siltstone /mudstone <br />dark <br />grey <br />521.80 <br />527.00 <br />5.20 clayey <br />decomp fissile <br />carbonaceous mudston <br />very dark <br />grey <br />527.00 <br />534.00 <br />G7 <br />7.00 moderately brig <br />pyrite coating o <br />coal <br />black <br />534.00 <br />541.55 <br />G8 <br />7.55 moderately brig <br />pyrite coating o <br />coal <br />black <br />541.55 <br />541.85 <br />G8 <br />0.30 dull coal <br />ash <br />brown /bl <br />541.85 <br />543.05 <br />G9 <br />1.20 <br />coal <br />black <br />543.05 <br />545.40 <br />2.35 clayey, pyrite <br />fissile <br />carbonaceous shale <br />dark <br />brown /bl <br />545.40 <br />546.50 <br />1.10 coaly <br />dull <br />boney coal <br />black <br />546.50 <br />550.45 <br />GA <br />3.95 moderately brig <br />pyrite coating o <br />rashy coal <br />black <br />550.45 <br />551.10 <br />0.65 coal lams <br />silty <br />bone <br />brown /bl <br />551.10 <br />552.00 <br />0.90 clayey <br />fissile <br />carbonaceous mudston <br />very dark <br />grey <br />552.00 <br />552.50 <br />ZZ <br />0.50 crumbly <br />coal <br />black <br />552.50 <br />555.00 <br />2.50 sandy <br />siltstone /mudstone <br />very dark <br />grey <br />555.00 <br />555.40 <br />0.40 clayey <br />fissile <br />carbonaceous mudston <br />very dark <br />grey <br />555.40 <br />561.50 <br />GB <br />6.10 moderately brig <br />coal <br />black <br />561.50 <br />562.00 <br />GB <br />0.50 sandy coal <br />coal <br />black <br />562.00 <br />564.60 <br />GB <br />2.60 moderately brig <br />occ resin frags <br />coal <br />black <br />564.60 <br />566.70 <br />2.10 clayey <br />mudstone /siltstone <br />very dark <br />grey <br />566.70 <br />568.90 <br />2.20 dull <br />coaly, clayey <br />boney coal <br />black <br />568.90 <br />571.00 <br />2.10 <br />carbonaceous mudston <br />very dark . <br />grey <br />571.00 <br />572.80 <br />1.80 <br />siltstone <br />very dark <br />grey <br />572.80 <br />574.90 <br />2.10 <br />carbonaceous mudston <br />very dark <br />grey <br />574.90 <br />578.20 <br />GC <br />3.30 <br />coal <br />black <br />578.20 <br />583.90 <br />5.70 interbedded <br />mudstone /sandstone <br />583.90 <br />585.10 <br />HO <br />1.20 <br />coal <br />black <br />585.10 <br />588.40 <br />3.30 <br />mudstone /siltstone <br />dark <br />grey <br />588.40 <br />590.80 <br />2.40 <br />siderite <br />medium <br />grey <br />590.80 <br />594.40 <br />3.60 interlaminated <br />mudstone /siltstone <br />dark <br />grey <br />• Rio Tinto Energy America - Colowyo Mine Page 730 of 1194 <br />