Records of the Geological Survey of India

acid amount analyses annual appears associated average average annual bauxite Bengal bismuth Bombay Burma carried cement cent Central Provinces clay coal Company compared concentrates considerable contain contents continued copper countries cwts deposits depth district exports feet field figures five gallons Geol Geological given gold Government grade hills imports increase India industry iron iron-ore Italy known lead less limestone Limited localities lower Madras manganese manganese-ore manufacture material mica miles million mineral mines Mysore Nagpur nearly obtained occur operations output pegmatites period plant ports practically present probably production proved Quantity quinquennium railway Rajputana recorded reported result returns rocks salt sands Shan shown silica silver South steel stone supply Surv TABLE taken thickness tion tons United usually varieties various veins world's yield