Australia has won its first gold medal, and the athletes were awarded medals made from gold produced by Rio Tinto, the official supplier to the London Olympics.
The London Organising Committee for the Olympic Games claims all suppliers have passed the requirements of its ethical sourcing guidelines, but one does not have to dig much at all to see that Rio Tinto should never have been accredited as a supplier to the Games.
See http://publishwhatyoupay.org/newsroom/blog/australia-wins-gold-can-same-be-said-rio-tinto.