KOLKATA: Kolkata National Aluminium Company LtdBSE -0.29 %. (Nalco) has reported foreign exchange earnings of 3,400 crore in 2012-13, nearly half of its record sales turnover of over 7,200 crore during the year. In terms of physical performance too, Nalco achieved the highest-ever bauxite production of 54.19 lakh tonnes, against the previous best of 50.03 lakh tonnes achieved in previous fiscal.
