Rio Tinto has priced an aggregate of US$3.0 billion of fixed and floating rate bonds.

The offering comprises US$1.0 billion of 3-year and US$1.25 billion of 5.5-year fixed rate, and US$250 million 2-year and US$500 million 3-year floating rate SEC-registered debt securities. The bonds will be issued by Rio Tinto Finance (USA) plc and will be fully and unconditionally guaranteed by Rio Tinto plc and Rio Tinto Limited.

The 3-year fixed rate notes pay a coupon of 1.375% and will mature on 17 June 2016.

The 5.5-year fixed rate notes pay a coupon of 2.250% and will mature on 14 December 2018.

The 2-year floating rate notes pay a coupon of 3-month US$ LIBOR plus 55 basis points and will mature on 19 June 2015.

The 3-year floating rate notes pay a coupon of 3-month US$ LIBOR plus 84 basis points and will mature on 17 June 2016.

BNP Paribas Securities Corp., J.P. Morgan Securities LLC, Morgan Stanley & Co. LLC, Credit Suisse (USA) LLC and RBS Securities Inc. acted as Joint Bookrunners.

A copy of the prospectus relating to the offering of the fixed and floating rate bonds can be obtained from Rio Tinto at the registered address above, any underwriter or any dealer participating in the offering (BNP Paribas Securities Corp., toll-free on 1-800-854-5674, J.P. Morgan Securities LLC, collect on 1-212-834-4533, and Morgan Stanley & Co. LLC, toll-free on 1-866-718-1649).

About Rio Tinto

Rio Tinto is a leading international mining group headquartered in the UK, combining Rio Tinto plc, a London and New York Stock Exchange listed company, and Rio Tinto Limited, which is listed on the Australian Securities Exchange.

Rio Tinto's business is finding, mining, and processing mineral resources. Major products are aluminium, copper, diamonds, thermal and metallurgical coal, uranium, gold, industrial minerals (borax, titanium dioxide and salt) and iron ore. Activities span the world and are strongly represented in Australia and North America with significant businesses in Asia, Europe, Africa and South America.