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