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• Drill Hole Lithology Summary <br />Drill Hole Easting Northing Collar Total D T Range Section File <br />C -06 -21 1, 327 588. 345,160.5 7,670.68 760.00 T03N R93W 2 5C <br />Adjusted Depths <br />From To Seam Thickness Lithologic Qualifiers Lithology Type Shade Color <br />light <br />light <br />medium -1 <br />light <br />medium -1 <br />light <br />dark <br />black <br />black <br />black <br />black <br />black <br />grey /blac <br />black <br />black <br />black <br />black <br />black <br />brown <br />grey <br />brown <br />grey <br />brown <br />black <br />grey -blac <br />black <br />black <br />brown <br />tan <br />grey <br />brown <br />black <br />black <br />black <br />brown <br />grey <br />grey <br />grey <br />grey <br />grey <br />grey <br />brown <br />grey <br />Page 744 of 1194 <br />170.30 <br />170.80 <br />FA <br />0.50 moderately dull shaley, pyrite /fr <br />coal <br />170.80 <br />171.60 <br />FA <br />0.80 ss lams <br />carbonaceous shale <br />171.60 <br />174.90 <br />FB <br />3.30 moderately brig <br />coal <br />174.90 <br />175.30 <br />FB <br />0.40 very slightly shaley <br />coal <br />175.30 <br />178.00 <br />FB <br />2.70 moderately brig <br />coal <br />178.00 <br />179.30 <br />1.30 moderately brig coal bands <br />carbonaceous shale <br />179.30 <br />179.70 <br />G7 <br />0.40 coaly <br />bone <br />179.70 <br />186.50 <br />G7 <br />6.80 occ shaley lams banded <br />coal <br />186.50 <br />194.90 <br />G8 <br />8.40 occ shaley lams banded <br />coal <br />194.90 <br />199.00 <br />G9 <br />4.10 occ shaley lams banded <br />coal <br />199.00 <br />202.00 <br />GA <br />3.00 occ shaley lams banded <br />coal <br />202.00 <br />203.10 <br />1.10 moderately dull ashy <br />carbonaceous shale <br />203.10 <br />203.50 <br />0.40 silty incl <br />carbonaceous mudston <br />203.50 <br />211.60 <br />8.10 muddy grey conv bedding <br />sandstone /siltstone <br />211.60 <br />213.60 <br />2.00 soft w/ thin coal beds <br />carbonaceous mudston <br />• <br />213.60 <br />214.00 <br />214.00 <br />216.00 <br />0.40 hard <br />2.00 shaley base <br />siltstone <br />carbonaceous mudston <br />216.00 <br />221.50 <br />GB <br />5.50 moderately brig trace pyrite <br />coal <br />221.50 <br />221.90 <br />GB <br />0.40 ashy poss w/ tuff incl <br />bone <br />221.90 <br />223.90 <br />GB <br />2.00 moderately brig <br />coal <br />223.90 <br />224.20 <br />0.30 coal lams <br />carbonaceous shale <br />224.20 <br />228.10 <br />3.90 <br />carbonaceous mudston <br />228.10 <br />228.60 <br />0.50 w/ expansion fra filled w/ calcite <br />siderite <br />228.60 <br />233.20 <br />4.60 increas silty w/ depth <br />mudstone <br />233.20 <br />237.00 <br />3.80 trace coal lams <br />carbonaceous mudston <br />237.00 <br />242.30 <br />GC <br />5.30 moderately brig calc cont w /cros <br />coal <br />242.30 <br />244.40 <br />HO <br />2.10 moderately brig <br />coal <br />244.40 <br />244.90 <br />0.50 abundant coal lams <br />carbonaceous shale <br />244.90 <br />254.70 <br />9.80 ss lams <br />carbonaceous mudston <br />254.70 <br />260.00 <br />5.30 ss lams <br />siltstone <br />260.00 <br />274.20 <br />14.20 <br />sandstone /siltstone <br />274.20 <br />292.30 <br />18.10 slightly silty <br />sandstone <br />292.30 <br />311.00 <br />18.70 <br />sandstone /siltstone <br />311.00 <br />321.70 <br />10.70 siderite infl @ base <br />sandstone <br />321.70 <br />325.80 <br />4.10 clayey top <br />mudstone <br />325.80 <br />327.50 <br />1.70 coaly <br />carbonaceous mudston <br />327.50 <br />328.30 <br />H4 <br />0.80 <br />coal <br />328.30 <br />338.00 <br />9.70 slightly silty siderite nodules <br />mudstone <br />Rio Tinto Energy America - Colowyo Mine <br />light <br />light <br />medium -1 <br />light <br />medium -1 <br />light <br />dark <br />black <br />black <br />black <br />black <br />black <br />grey /blac <br />black <br />black <br />black <br />black <br />black <br />brown <br />grey <br />brown <br />grey <br />brown <br />black <br />grey -blac <br />black <br />black <br />brown <br />tan <br />grey <br />brown <br />black <br />black <br />black <br />brown <br />grey <br />grey <br />grey <br />grey <br />grey <br />grey <br />brown <br />grey <br />Page 744 of 1194 <br />