Gas leak accidents that made headline the last few years

The gas leak from a chemical plant in Visakhapatnam in which at least 11 people were killed and 1,000 affected on Thursday is one in a long list of industrial accidents resulting from poisonous gases seeping into the air.

The December 1984 Bhopal tragedy in which more than than 3,000 people were killed when methyl isocyanate leaked out is the world's worst industrial disaster. Here are other gas leaks that made headlines in the last few years:

Bhilai, Chhattisgarh: On June 12, 2014, there was a leak in a methane gas pipeline at the Bhilai plant of Steel Authority Of India Limited (SAIL). Six people, including two deputy general managers of the company, were killed and over 50 injured.

Nagaram, Andhra Pradesh: On June 27, 2014, a massive fire broke out following a blast in Gas Authority of India Limited's plant, killing 29 people and injuring 10.The 18-inch underground pipeline, designed to supply gas to the Lanco power plant,was used for transporting wet gas having condensate/water. .