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F <br />z <br />z <br />0 <br />w <br />J <br />W <br />ti <br />n <br />0 <br />a <br />J <br />W <br />DIPOLE -DIPOLE SURVEY RESULTS <br />SW B28 / <br />MODIFIED POLE -DIPOLE SURVEY RESULTS <br />B28 <br />MAPLEGEND <br />® <br />Area mined in deep coal <br />i <br />Limit of stripping of shallow coal <br />® <br />Area augered within shallow coal <br />Borehole <br />Test line <br />SECTION LEGEND <br />® Sandstone <br />. Coal <br />mMine workings <br />Minespoill Buried highwall/Ground surface <br />B3f B27 B26A highway <br />DISTANCE (FT) <br />B34 B27 B26A <br />1321 NE <br />500 550 600 650 <br />B21 <br />DISTANCE (Fr) <br />Resistivity (ohm -meters) <br />O��ao,�otioN,3 o CASE HISTORY NO. 3 <br />'L �)• RESULTS OF DC RESISTIVITY SURVEYING <br />OVER TWO MINED COAL SEAMS <br />SOUTH WEST IN DIANA <br />