Eurofer said the mega merger would give the combined company a market share of almost 40 percent of the global iron ore market, reducing the number of world major suppliers from three to two. The other is Brazil's CVRD, which already has a market share of more than 33 percent. 'Such market domination limits access to raw materials and leaves little room for negotiations on price. Competition in these circumstances is theoretical not a reality,' Moffat adds. Eurofer say it is asking the European Commission, the European Union antitrust watchdog, to investigate and to oppose BHP Billiton's efforts to take over Rio Tinto.