This follows the commissioning on Thursday 21 February of the second phase of the company's latest expansion project, which entailed a 32-pot, 22,000 mtpa extension of Potline 5, completed in July 2007; and a 40-pot, 40,000 mtpa extension of Potline 6. The combined Potline 56b expansion project, completed at a cost of $236m, has brought the number of electrolytic aluminium reduction cells in the plant…