EU antitrust regulators to investigate ArcelorMittal, Ilva deal

EU antitrust regulators opened a full-scale investigation on Wednesday into ArcelorMittal'sproposed purchase of Italian steel plant Ilva, ratcheting up the pressure on the Luxembourg-based steelmaker to offer more concessions to address competition concerns.The world's largest steelmaker reached a 1.8-billion-euro (£1.6 billion) deal to acquire Europe's biggest capacity steel plant in June.The European Commission said it was concerned the merger may reduce competition in some flat carbon s