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Drill Hole Lithology Summary <br />0 <br />594.40 <br />595.50 <br />1.10 <br />boney coal <br />black <br />595.50 <br />642.50 <br />47.00 <br />interbedded <br />silty <br />mudstone /sandstone <br />dark <br />grey <br />642.50 <br />649.10 <br />6.60 <br />sandstone <br />light -med <br />grey <br />649.10 <br />650.00 <br />H4 <br />0.90 <br />coal <br />black <br />650.00 <br />652.60 <br />2.60 <br />siltstone <br />medium <br />grey <br />652.60 <br />656.50 <br />3.90 <br />mudstone <br />dark <br />grey <br />656.50 <br />664.00 <br />7.50 <br />silty <br />mudstone /sandstone <br />dark <br />grey <br />664.00 <br />666.80 <br />2.80 <br />sandstone /siltstone <br />medium- <br />grey <br />666.80 <br />668.80 <br />2.00 <br />silty <br />mudstone <br />dark <br />grey <br />668.80 <br />671.10 <br />H6 <br />2.30 <br />coal <br />black <br />671.10 <br />672.30 <br />1.20 <br />carbonaceous mudston <br />very dark <br />grey <br />672.30 <br />678.40 <br />6.10 <br />silty <br />mudstone <br />dark <br />grey <br />678.40 <br />679.10 <br />H8 <br />0.70 <br />coal <br />black <br />679.10 <br />690.00 <br />10.90 <br />interbedded <br />silty <br />mudstone /sandstone <br />dark -me <br />grey <br />690.00 <br />701.00 <br />11.00 <br />interbedded <br />med gr ss /dk gr <br />sandstone /mudstone <br />medium <br />grey <br />701.00 <br />702.30 <br />13 <br />1.30 <br />coal <br />black <br />702.30 <br />703.20 <br />0.90 <br />carbonaceous mudston <br />very dark <br />grey <br />703.20 <br />709.60 <br />15 <br />6.40 <br />coal <br />black <br />709.60 <br />711.20 <br />1.60 <br />carbonaceous mudston <br />very dark <br />grey <br />711.20 <br />714.70 <br />3.50 <br />mudstone /siltstone <br />dark <br />grey <br />714.70 <br />733.00 <br />18.30 <br />silty layers <br />sandstone <br />light -med <br />grey <br />733.00 <br />735.90 <br />2.90 <br />mudstone /siltstone <br />dark <br />grey <br />735.90 <br />739.80 <br />17 <br />3.90 <br />coal <br />black <br />739.80 <br />740.70 <br />0.90 <br />carbonaceous mudston <br />very dark <br />grey <br />740.70 <br />775.50 <br />34.80 <br />interbedded <br />interlaminated, <br />mudstone /sandstone <br />775.50 <br />776.50 <br />1.00 <br />clayey <br />siltstone <br />dark <br />grey <br />776.50 <br />777.40 <br />0.90 <br />carbonaceous mudston <br />very dark <br />grey <br />777.40 <br />781.60 <br />J2 <br />4.20 <br />coal <br />black <br />781.60 <br />783.00 <br />1.40 <br />carbonaceous mudston <br />very dark <br />grey <br />783.00 <br />784.30 <br />1.30 <br />siltstone <br />medium <br />grey <br />784.30 <br />787.00 <br />2.70 <br />mudstone <br />dark <br />grey <br />787.00 <br />792.50 <br />5.50 <br />sandstone /mudstone <br />medium- <br />grey <br />792.50 <br />794.50 <br />2.00 <br />siderite <br />794.50 <br />795.00 <br />0.50 <br />siltstone <br />medium <br />grey <br />795.00 <br />797.00 <br />2.00 <br />silty <br />mudstone <br />dark <br />grey <br />797.00 <br />798.80 <br />1.80 <br />boney coal <br />798.80 <br />801.50 <br />J4 <br />2.70 <br />coal <br />black <br />801.50 <br />803.00 <br />1.50 <br />carbonaceous mudston <br />very dark <br />grey <br />0 f <br />Page 731 o 1194 <br />Rio Tinto Energy America - Colowyo Mine g <br />