CHICAGO & RIO DE JANEIRO--(BUSINESS WIRE)--Fitch Ratings has affirmed the Long-term Local- and Foreign-Currency Issuer Default Ratings (IDRs) for Vale S.A. (Vale) at 'BBB+' and National Scale Rating at 'AAA(bra)'. The Rating Outlook is Stable. A full list of rating actions follows at the end of this release. KEY RATING DRIVERS Leading Seaborne Iron Ore Vale's 'BBB+' and 'AAA(bra)' ratings are supported by its position as the leading seaborne producer of low-cost iron ore, with a 2014 market sha


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