<human>:  Where was the factory located in the Bhopal gas tragedy?
<bot>: The factory was located in Bhopal, India. The Bhopal disaster happened on December 3, 1984. It was caused by a gas leak from the Union Carbide plant, which was the largest chemical plant in the world at the time. The leak released methyl isocyanate, a highly toxic gas. The gas leaked into the streets and killed thousands of people. It is estimated that over 3,000 people died as a result of the gas leak.