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AIRBORNE MINERAL SURVEY AND EXPLORATION WING
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analysed Assistant Attended bands bauxite Bihar block boreholes Calcutta carried Central Circle clay coal Coalfield collected completed comprise construction continued copper covered Delhi deposits depth detailed dips Director district Division drilling east electrical log Engineer examined exploration exploratory exposed extension field folds formations foundation geological mapping Geologist geophysical gneiss granite Groundwater holes India indicated investigation joints Laboratory length limestone located logging Long Lower Lucknow meeting metres million mineralisation minerals Mining Nagpur North observed occurs officers operations period pits Pleistocene Pradesh prepared present Project proposed proved publications quartz quartzite Rajasthan ranging recommended recorded Region reported reserves river rock types S/Shri samples sand sandstone scale schist seams shales Sheet Shri strike studies suggested Survey systematic thickness thin tonnes toposheet trending tunnel units University upto valley varies veins West zone