Stocks to watch at close on Tuesday STOCKS to watch on the Australian stock exchange at close on Tuesday: The world's third largest gold producer AngloGold Ashanti will bring its West Australian mine into production ahead of schedule despite pushing ahead with an overall plan to cut costs by $US500 million. Hearing implant maker Cochlear says the success of the rollout of its Nucleus 6 device will be important for the company's financial results in the 2014 financial year. Engineering company Downer EDI has recorded an 80 per cent increase in net profit but warns the next 12 months will be challenging. Mining giant Fortescue has dished out more than $1 billion in contracts to Aboriginal businesses since 2011. Leighton Holdings has finalised a contract with the Western Australian government to improve the road network around Perth Airport.