It is more than ten years since over forty tonnes of lethal gases leaked from the pesticide plant in Bhopal belonging to Union Carbide Corporation. The leak affected over 500,000 persons. Most of these gases (which included methyl isocyanate, hydrogen cyanide and monomethylamine) have produced permanent damage to the respiratory, gastrointestinal, reproductive, immunological, nervous, musculoskeletal and other systems of the bodies of the victims. One-fifth of the affected population continues to suffer from diseases related to exposure to these gases.