Thousands of survivors of the world's worst industrial accident blocked trains through a central Indian city on Saturday to demand more compensation for the 1984 disaster.

A survivor of the 1984 disaster shouts slogans during a demonstration Friday in front of the Union Carbide plant in Bhopal, India.

The protest came on the 27th anniversary of the disaster in Bhopal, where a Union Carbide pesticide plant leaked gas that killed some 15,000 people and maimed tens of thousands of others.