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LONDON, March 17 (Reuters) - Building a desalination plant at the Los Pelambres copper mine could add $300-400 million to Antofagasta's $1.2 billion expansion plan, its chief executive said on Tuesday.
Last week, the company reached a deal with protesters who had been blocking access to the mine, blaming it for water shortages.
As part of that agreement, Antofagasta committed to using sea water should a planned expansion of the mine go ahead.
Reporting by Silvia Antonioli; editing by Jason Neely