(i) IISCO stand for the Indian Iron and Steel Company. It is located at Bumpur and Kulti in West Bengal, 210 km. from Kolkata. (ii) Iron-ore—Singhbhumi (Jharkhand) and Mayurbhanj (Orissa); Coal—Ramnagar, Raniganj and Jharia; Manganese—Balaghat and Birmitrapur; Limestone and Dolomite: Gangapur (Orissa).