Control Board and the Fisheries Department being deployed to look into the situation. Manual efforts to remove the oil spill were made by the Coast Guard, in addition to helicopter sorties to monitor the spread and assist in its removal. Three heavy buckets were used for removing the oil spill by Chennai Corporation. On 5 February, the then Chief Minister of Tamil Nadu O. Panneerselvam visited the site and declared that 90% of the clean up work was over with the remainder expected to be completed in a couple of days. He claimed tests had shown that the spill had not affected marine life, with fish safe for consumption, and also promised livelihood relief to the local fishing community. On 6 February, it was revealed that the viscous heavy oil being cleaned was heavy bunker fuel caused by a rupture in the fuel tanks of the oil tanker Dawn Kanchipuram and not from its cargo. As on 7 February, the efforts to manage the oil spill had yielded approximately 160 metric tonnes of sludge, removed by over 5700 people. In February 2017, the Indian Coast Guard said that approximately an area of was affected. He stated that 95 per cent of the spill was towards north of the Chennai Port with sludge accumulating over a length of spread across 11 spots. He added that the shores of the city's Marina Beach suffered minimum impact and that the shoreline of the suburb Tiruvallur had oil accumulation over a stretch. The volume of the spill was estimated at . Criticism The Government of Tamil Nadu was criticized for its failures in crisis communication and contingency response. References 2017 disasters in India 2017 in the environment 2017 industrial disasters Environment of Tamil Nadu 2010s in Tamil Nadu January 2017 events in India Oil spills in India Disasters in Tamil Nadu