Economic utilization, recovery and substitution of some
by M Subramanian 1966 — mount importance for India, not only to tide over the present crisis Nickel,. Selenium and Tungsten. nickel and cobalt ores found in abundance, and some within a million tons. 1000 1100 1200 presence of coke oven gas for one hour at 1100C and Turnings, borings, scalpings, saw dust, trimmings. soil scraps,.