Aluminium giant National Aluminium Company (Nalco) has posted 4.75 per cent jump in sales turnover at Rs. 6,809 crore in 2012-13. It has also plans for ambitious new ventures, expansion and diversification programmes. Speaking to media persons at Bhubaneswar, Nalco Chairman-cum-Managing Director (CMD) Ansuman Das said the company is pursuing with Odisha government plans to obtain Pottangi Bauxite Mines, which has a mineable reserve of about 70 million tonnes. The Nalco CMD said the company is also planning to set up a Rs. 5,500 crore greenfield Alumina Refinery in Gujarat for which Bauxite shall be supplied by Gujarat Mineral Development Corporation. Nalco has posted a higher net sales turnover of Rs. 6,809 crore, which is 4.75 per cent over Rs. 6,500 crore achieved in the previous fiscal. The rise in sales turnover was mostly attributed to higher production and sale of alumina.