Aluminium Bahrain (Alba), which owns the world's fourth-largest aluminum smelter, said on Friday its planned sixth production line could be completed by early 2015. Feasibility studies are currently under way, with banking feasibility studies seen ready by 2013, Laurent Schmitt, the company's chief executive officer said in a conference call. "First metal would be available in early 2015," Schmitt told Reuters. The line is expected to add 400,000 tons annual capacity to Alba's current production of 881,000 tons a year, he said.