In 1999, Dow merged with the Union Carbide Corporation, whose subsidiary Union Carbide India ran the Bhopal pesticide plant - the site of one of the world's worst industrial disasters in December 1984.

BBC: London 2012: How does Dow Chemical gain from Olympics?

In 1999, Dow merged with the Union Carbide Corporation, whose subsidiary Union Carbide India, ran the Bhopal pesticide plant - the site of one of the world's worst industrial disasters, in which thousands of people died in the previous decade.

BBC: London 2012: Chemical company Dow funds stadium wrap

In 1999, Dow merged with the Union Carbide Corporation, whose subsidiary Union Carbide India, ran the Bhopal pesticide plant - the site of one of the world's worst industrial disasters which had led to the death of thousands of people in the previous decade.

BBC: A computer generated image of how the wrap will look