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OF THE GEOLOGICAL SURVEY OF INDIA
86 Pt 2Mineral Production of the Indian Union during
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alluvium ANON appear Assistant associated bands bank beds belt Bihar Bombay Calcutta carried Circle clay coal coalfield collected consist contain continued covered December Department deposits depth detailed direction district drilling dykes east Eastern Economic effect examined exposed extending feet field formations fossils Geological Geologist gneisses Gondwana grade granite headquarters hill Indian industry iron joints laterite leave lignite limestone localities Lower Madhya Madras March material Metal miles mineral Mines Nagpur northern noted November occur pegmatites places portion Pradesh present Proc Project quartz quartzites range recorded reports Returned river road rocks samples sand sandstones schists seams seen shales sheet soil strike surface Survey systematic mapping thickness thin tons trap types Upper valley varying veins village visited Western wide yield zone