Rio Tinto Alcan

Alcan Publishes 2006 Corporate Sustainability Report

September 30, 2006

Montreal, Canada – Alcan published its 2006–Corporate Sustainability Report today, providing discussion and examples of tangible value resulting from its company-wide commitment to sustainability. Now available in HTML and PDF format at www.alcan.com/SR06, the fifth–annual report builds on the eight key sustainability focus areas introduced in the 2005 report.

“Worldwide, sustainability as an approach to business continues to evolve as more companies identify and express the link to long-term value creation. At Alcan, sustainability is evolving as we refine our goals and establish metrics to effectively measure the impacts of our actions,” said Dick–Evans, President and Chief Executive Officer, Alcan Inc. “Alcan employees are recognizing the tangible and broader value-creation that results from embedding sustainability criteria directly into Alcan’s decision-making processes,” he added.

The 2006 Report includes performance data from calendar years 2003, 2004 and 2005, and references to key initiatives in early 2006. It draws on guidelines established by the Global Reporting Index.

Highlights over the past year included:

The continued implementation of the Alcan Integrated Management System (AIMS) and the introduction of a new fourth “Alcan People Advantage” pillar, recognizing that Alcan’s ability to maximize value depends on the quality, skills and dedication of its employees;

A 25 percent reduction in GHG emissions intensity (direct and indirect) between 1990 and 2005, surpassing objectives. A commitment was made for a further 10 percent reduction from 2006-2010;

Joining eleven companies in the Business Leaders’ Initiative on Human Rights and participated in a special task force of the World Economic Forum’s Partnering Against Corruption initiative;

Being selected as the 2005/2006 super-sector leader (all basic resources) and leading aluminum sector company on the Dow Jones Sustainability World Index;

Furthermore, the International Institute for Sustainable Development (IISD), focused on promoting responsible business practices internationally and advancing policy recommendations bearing on international business, continues to be chaired by a member of Alcan’s Executive Committee.

Alcan Inc. (NYSE, TSX: AL) is a leading global materials company, delivering high quality products and services worldwide. With world-class technology and operations in bauxite mining, alumina processing, primary metal smelting, power generation, aluminum fabrication, engineered solutions as well as flexible and specialty packaging, today’s Alcan is well positioned to meet and exceed its customers’ needs. Alcan is represented by 65,000 employees in 61 countries and regions, and posted revenues of US$20.3 billion in 2005. The Company has featured on the Dow Jones Sustainability World Index consecutively since 2003. For more information, please visit: http://www.alcan.com.