UPDATE 1-Blackout ramps up pressure on Alcoa Australian aluminium smelter
December 01, 2016 at 21:59 PM EST
MELBOURNE, Dec 2 (Reuters) - A blackout that forced Alcoa Corp to shut one of two potlines at its Portland aluminium smelter in Australia will ratchet up costs further and may put the plant's future in jeopardy, analysts said on Friday.