Brussels, 25/01/2010 (Agence Europe) - On Monday 25 January, the European Commission announced that it had opened a formal antitrust investigation into Anglo-Australian mining companies Rio Tinto and BHP Billiton under the EU rules on restrictive business practices (Article 101 of the Treaty on the Functioning of the European Union - TFEU). Rio Tinto and BHP Billiton are respectively the second and third largest producers of iron ore in the world. The proposed joint venture between Rio Tinto...