Records of the Geological Survey of India, Volume 86Includes the "Annual report of the Geological Survey of India," 1867- |
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abutment alignment appears Assistant associated bands bank Bihar carried cent Circle clay coal collection consist contain continued covered Department deposits depth detailed developed district dolomite drilling dykes east Economic Engineering examined fault feet field folded formations fossils foundation geological geological mapping Geological Survey Geologist gneisses Government grade granite half headquarters hill inches India indicate industry joints laterite leave lignite limestone localities Lower Madhya Pradesh Madras manganese material Messrs Metal mica miles mineral mines Nagpur November occur pegmatites phyllites places portion present production Project proposed quantity quartz quartzites range reported Returned river road rocks sand sandstones schists seen shales sheet sheet 73 soil square miles stage strike suitable supply Survey systematic thick thin tons town trap tunnel types Upper Valley varying veins western yield zone