October 22, 2007 - Alcan has released its 2007 web-based Corporate Sustainability Report. This is the sixth report since 2002 that provides an ongoing look at the challenges, opportunities and performance related to integrating sustainability into the everyday decision-making process at Alcan.

Available at www.alcan.com/SR07, this report builds on the 2006 report with updated 2007 content, data and examples of business sustainability in action. Discussion of strategies and performance continues to be based on key areas identified as the "Alcan 8": Energy, Climate Change, Natural Resource Stewardship, Community Development, Well-Being, Environmental Releases, Innovation and Industry Shifts, and Product Stewardship. New and updated case studies provide details on projects that support the business case for sustainability.

This report draws on the guidelines set out by the Global Reporting Initiative (GRI) G3 Guidelines, to the extent that we have felt it possible to do so.

As a leading global materials company Alcan reported 2006 revenues of US$23.6 billion in bauxite mining, alumina processing, primary metal smelting, power generation, aluminum fabrication, engineered solutions as well as flexible and specialty packaging. Dynamic, multicultural and value-driven, Alcan has 68,000 employees, including its joint ventures, in 430 facilities, offices and R&D centres in 61 countries and regions.

On July 12, 2007, Alcan's Board of Directors recommended that the Company's shareholders accept an offer by Rio Tinto Group to acquire all outstanding Alcan common shares for US$101 per share in an all cash transaction. To be named Rio Tinto Alcan, the combined aluminum group will be a new global leader in the industry with an attractive cost position bolstered by a strong technology portfolio, complementary refining and smelting assets, and a strong growth pipeline.

For more information, please visit: www.alcan.com.

Rio Tinto Alcan

Rio Tinto Alcan

About Rio Tinto Rio Tinto is a leading international mining group headquartered in the UK, combining Rio Tinto plc, a London and NYSE 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, energy (coal and uranium), gold, industrial minerals (borax, titanium dioxide, salt, talc) and iron ore. Activities span the world but are strongly represented in Australia and North America with significant businesses in South America, Asia, Europe and southern Africa.

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