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CENTRAL CHEMICAL DIVISION
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aeromagnetic analysis anomalies associated bands bank basalt basic basin belt block boreholes carried clay coal collected completed comprising construction contain continued core covered deposits depth detailed developed Director DISTRICT DIVISION drilling dykes east eastern evaluation exploration exposed extension fault field flows Formation foundation geological mapping geophysical geotechnical gneiss grained granite grey ground Group Headquarters holes identified included indicated investigation Lats length lignite limestone located logging Lower magnetic measures mineral mineralisation Nagpur occur phyllite places Pradesh prepared present progress Project proposed quartz quartzite range recorded regional reports revealed river rock samples sand sandstone scale Scheme schist seams sediments shale shear Shri slope sq km stage strike structure studies suggested surface surveys taken thickness tion toposheet traverses trending tunnel types units upper upto values varying veins zone