Workers wash stones stained by oil sludge at Ramakrishna Nagar in Ernavur in north Chennai on Thursday

The bunker oil spilt by Indian flagship vessel M T Dawn Kancheepuram after it collided with the Isle of Man's vessel B W Maple could persist in the environment for months or years if not removed.

The MoU for the 2,700 Mw plant was signed with the state during the Global Investors Summit

India plans to more than double its liquefied natural gas (LNG) annual import capacity to 50 million tonnes in the next few years, Petroleum Minister Dharmendra Pradhan said on Thursday.