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Drill Hole Lithology Summary <br />Drill Hole <br />Easting <br />Northing Collar Total Depth <br />Township Range Section File <br />C -04 -26 <br />1, 328, 423.80 <br />346, 721.87 7,539.04 785.10 <br />T03N R94W <br />2 <br />5A <br />Adjusted Depths <br />From <br />To <br />Seam <br />Thickness Lithologic Qualifiers <br />Lithology Type <br />Shade <br />Color <br />0.00 <br />12.00 <br />12.00 <br />surficial material <br />12.00 <br />24.63 <br />12.63 <br />mudstone /siltstone <br />24.63 <br />27.00 <br />2.37 oxidized <br />mudstone <br />dark <br />grey <br />27.00 <br />31.55 <br />F1 <br />4.55 <br />coal <br />dark <br />black <br />31.55 <br />32.05 <br />F1 <br />0.50 <br />rashy coal <br />32.05 <br />32.40 <br />0.35 <br />carbonaceous mudston <br />32.40 <br />32.90 <br />0.50 <br />sandstone <br />light <br />grey <br />32.90 <br />32.90 <br />OXID <br />0.00 <br />32.90 <br />34.50 <br />1.60 <br />mudstone /siltstone <br />dark <br />grey <br />34.50 <br />36.30 <br />1.80 <br />mudstone /siltstone <br />dark <br />grey <br />36.30 <br />36.50 <br />0.20 <br />claystone <br />36.50 <br />37.80 <br />1.30 <br />sandstone <br />light <br />grey <br />37.80 <br />44.20 <br />6.40 laminated <br />sandstone /mudstone <br />light <br />grey <br />44.20 <br />44.70 <br />0.50 <br />core loss <br />44.70 <br />50.80 <br />6.10 laminated <br />sandstone /mudstone <br />light <br />grey <br />50.80 <br />54.70 <br />SF3U <br />3.90 <br />sandstone <br />light <br />grey <br />• <br />54.70 <br />63.70 <br />SF3U <br />9.00 carbonaceous laminated <br />sandstone <br />light <br />grey <br />63.70 <br />73.70 <br />SF3U <br />10.00 carbonaceous laminated <br />sandstone <br />light <br />grey <br />73.70 <br />83.70 <br />SF3U <br />10.00 <br />sandstone <br />light <br />grey <br />83.70 <br />86.20 <br />SF3U <br />2.50 <br />sandstone <br />light <br />grey <br />86.20 <br />87.00 <br />F3 <br />0.80 <br />coal <br />black <br />87.00 <br />91.00 <br />4.00 <br />carbonaceous mudston <br />dark <br />grey <br />91.00 <br />92.60 <br />1.60 carbonaceous laminated <br />siltstone /sandstone <br />light <br />grey <br />92.60 <br />93.70 <br />1.10 <br />mudstone /siltstone <br />dark <br />grey <br />93.70 <br />93.80 <br />0.10 <br />mudstone /siltstone <br />dark <br />grey <br />93.80 <br />100.55 <br />SFSL <br />6.75 carbonaceous laminated <br />sandstone <br />light <br />grey <br />100.55 <br />103.70 <br />3.15 interbedded <br />mudstone /sandstone <br />light <br />grey <br />103.70 <br />104.60 <br />0.90 interbedded <br />mudstone /sandstone <br />light <br />grey <br />104.60 <br />109.45 <br />4.85 silty laminated <br />mudstone /siltstone <br />dark <br />grey <br />109.45 <br />109.55 <br />0.10 <br />siderite <br />109.55 <br />109.70 <br />0.15 <br />mudstone /siltstone <br />109.70 <br />109.80 <br />0.10 <br />siderite <br />109.80 <br />112.30 <br />2.50 <br />mudstone /siltstone <br />112.30 <br />113.70 <br />F5 <br />1.40 bright <br />coal <br />dark <br />black <br />113.70 <br />119.70 <br />F6 <br />6.00 bright <br />coal <br />dark <br />black <br />119.70 <br />120.70 <br />F6 <br />1.00 <br />rashy coal <br />120.70 <br />124.70 <br />4.00 <br />carbonaceous mudston <br />dark <br />grey <br />• <br />124.70 <br />125.70 <br />1.00 <br />carbonaceous mudston <br />dark <br />grey <br />Rio Tinto Energy America - Coiowyo Mine <br />Page 312 of 1194 <br />