CIL also said it has been working out the modalities to raise coal sales bills on gross calorific value basis and would implement the same soon. However, in terms of production, it produced 72.28 million tonnes (mt) of coal in March, exceeding its target of 68.68 mt for the month. According to its provisiol data, CIL produced 567.37 mt in FY 18, achieving 95 per cent of its target of 600 mt for the year. However, it achieved a 2.4 per cent growth in production as compared to 554.13 mt produced in 2016-17 (FY17).