Alcan last week rejected a $US27 billion ($33 billion) hostile offer from its US rival, Alcoa, which would create the world's largest aluminium company, and indicated it was in talks with unnamed "third parties".
The Herald understands that several potential suitors, including Rio and BHP, have expressed interest in opening discussions with Alcan's board. Some, including Rio, have already hired investment banks to provide advice on a possible bid.
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