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AIRBORNE MINERAL SURVEY AND EXPLORATION WING
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alignment analysis anomaly associated bands bank bed rock block boreholes carried channel Circle clay coal collected completed comprising conducted construction continued cores covered delineated deposits depth detailed dipping Director district Division drilling east examined exploration exposed extension fault field flows folded Formation foundation geological geological mapping Geologist geophysical gneiss grade granite Group hill holes India indicated laboratory length limestone located logged magnetic major measures mineralisation minerals Nagpur nature observed occurs officers phyllite pits Pradesh prepared presence Project proposed quartz quartzite recommended regional reported resistivity river rock rock types samples sand sandstone Sarvashri scale Scheme schist seams sediments shale shear Shri soil sq km stage strike structural studies suggested surface surveys thickness tion traverse trending tunnel units Upper valley values varying veins zone