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Brazil's Vale says co is reviewing its asset portfolio

SAO PAULO, May 14 (Reuters) - Brazilian miner Vale SA is reviewing its assets portfolio, considering their risk and return, the company said in slides prepared for a presentation to investors on Tuesday.

The company also said that among its challenges for the future is to have a lean portfolio, while optimizing growth and risk factors.

(Reporting Luciano Costa; Writing by Carolina Mandl)