For eight successive years - between 1999-2000 and 2006-07 - the port at Visakhapatanam occupied the number one slot among the twelve major ports in the country. In 2007-08, it lost that position to Kandla. Against Visakhapatanam's 64.59 million tonnes, Kandla managed to handle a little more at 64.89 million tonnes of cargo. The Kolkata port (including Haldia) slipped to the third position at 57.28 million tonnes.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/k-bhattacharya-oil-oil-everywhere
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/business-standard-new-delhi
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/energy-policy
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/oil-exploration
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/vishakhapatnam-d
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/calcutta-d