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Update: Market Chatter: Rio Tinto, Glencore Merger Talks Likely to Extend Beyond Thursday Deadline as Differences Remain [Yahoo! Finance]

Rio Tinto Plc  (RIO) 
US:NYSE Investor Relations: riotinto.com/investors-87.aspx
PDF (Updates with Glencore's response in the fourth paragraph.) Rio Tinto (RIO) and Glencore's merger [Read more]