Civil services chronicle published this article page no 19 It may also be called a heavy industry because ituses large quantities of bulky raw materials and its products are also heavy. IAS iron is extracted from iron ore by smelting in a blast furnace with carbon coke and limestone. the molten iron is cooled and moulded to form pig iron which is used for converting into steel by adding strengthening materials like manganese UPSC Preparation magazine.
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