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OVERBURDEN STRATIGRAPHY <br />(VERTICAL SECTION) <br />APPROXIMATE <br />7HICKNE33 <br />HOLDERNESS MEMBER <br />ALTERNATING SANDSTONE <br />ANO SHALE BEDS <br />15 0 FT. <br />• <br />~1 <br />L~ <br />600 FT. <br />TO FT. <br />I <br />;:'.I TWENTYMILE SANDSTONE <br />(MASSIVE) <br />MARINE SHALE <br />WITH SOME MINOR <br />SILTS70NE BEDS <br />WADGE ROOF (SEE FIGURE B ) <br />WADGE COAL SEAM <br />FIGURE D <br />_,~, ~~ . <br />