Rio Tinto Chief Executive Tom Albanese poses for photographs at a financial institution in London February 10, 2011. Global miner Rio Tinto surprised investors by more than doubling its full-year dividend and promising to return $5 billion (3 billion pounds) to shareholders by 2012, looking to soak up bumper cashflows after it reported a record second-half profit. REUTERS/Toby Melville (BRITAIN - Tags: BUSINESS)