Massive releases of agents intentionally or unintentionally can be disruptive to the lines of individuals at many levels. In 1984, the release of toxic Methylisocyanate gas had occurred suddenly and without warning from the union carbide plant in Bhopal. This disaster had created thousands of casualties thereby overwhelming local, health and medical resources.
We have discussed causes of the accident, and role of Methylisocyanate in the causation of health effects. We present an overview of preparedness and response to the chemical disaster and emergency medical management.