Following on Rio Tinto’s problems in China (see, BHP Billiton is being investigated by the US Securities and Exchange Commission (SEC) over violations of anti-graft laws. At present neither the SEC nor the company are giving much away, even the country where the alleged bribery took place (although both Cambodia and the Philippines are taking up pole position). The lack of disclosure is only working to pique the interest of journalists. And just to add to its woes, the company is being sued by a powerful environmental group in the US over claims that its New Mexico operations have contaminated groundwater flowing into neighbouring areas.