A girl who suffers from hearing and speech disorders reacts to the camera at a rehabilitation centre supported by Bhopal Medical Appeal, for children who were born with mental and physical disabilities, in Bhopal in this November 11, 2014 file photo. In the early hours of Dec. 3, 1984, a pesticide factory owned by U.S. multinational Union Carbide Corp accidentally leaked toxic cyanide gas in the central Indian city of Bhopal, killing thousands and leaving many more with serious illnesses. As survivors of the disaster gather to hold candlelight vigils and protests in a bid to galvanise support for victims on the disaster's 30th anniversary, the city's second and third generations of disabled children stand out in their demands. To match Feature INDIA-BHOPAL/ANNIVERSARY REUTERS/Danish Siddiqui/Files (INDIA - Tags: ENVIRONMENT HEALTH DISASTER BUSINESS INDUSTRIAL)