On National Pollution Prevention Day, the CM urged people to "save green and stay clean".
"Today is National Pollution Prevention Day. Let us strive to 'save green, stay clean'. In #Bangla, we have set up a six-member committee headed by the chief secretary to look into environment issues," Banerjee tweeted.
More than 3,000 people died after they were exposed to toxic methyl isocyanate (MIC) gas due to a leakage at a pesticide plant in Bhopal.