The government will soon file a curative petition in the Supreme Court seeking enhancement of the compensation paid by Dow Chemicals and its subsidiary Union Carbide to victims of the Bhopal gas tragedy by 1,500 crore rupees. Sources said in New Delhi that the petition in this regard is ready and is awaiting the approval of a senior law officer.The petition, to be filed by the Ministry of Chemicals and Fertilisers, has pointed out that the 470 million US dollar settlement arrived at by the apex court in its decision in February, 1989, was allegedly based on incorrect calculation and reasoning. It was based on the erroneous assumption that there were only 3,000 deaths due to the gas leak. However, the death toll later turned out to be higher, at 5,295.