Mining colossus Rio Tinto has priced up $2bn worth of fixed rate bonds to be issued by Rio Tinto Finance (USA).The $700m of five year bonds will pay a coupon of 2.5% and will mature on 20 May 2016, the $1bn of 10 year notes will pay a coupon of 4.125% and will mature on 20 May 2021 while the $300m of 30 year notes will mature on 2 November 2040, and constitute a further tranche of the 5.2% notes issued back in November 2010. ---jh