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appears Assistant associated bands beds Bihar Bombay Calcutta carried cent Circle clay coal collected contain continued covered deposits depth detailed district dolomite east eastern effect estimated examined exported extensive feet field formation further Geological Survey Geologist given gneisses Government grade granite headquarters hill important increase India indicate industry Iron Kaladgi known lake lignite limestone localities Lower Madhya Pradesh Madras manufacture mapping material Metal mica miles million mineral mines Mysore Nagpur noted November occur Orissa output pits places present probably production Project quantity quartzites Rajasthan recent recorded reported reserves Returned river road rocks samples sand sandstones schists sediments seen shales sheet Singhbhum Steel suggested suitable Survey of India TABLE thickness tion tons trap types Upper Valley Value village