Sep 18, 2008. /Lesprom.com/. Weyerhaeuser Company announced it has been named to the Dow Jones Sustainability Index that tracks North American companies in terms of their economic, environmental and social performance. Weyerhaeuser is the only North American company named in the category of forestry and paper products. The DJSI follows a best-in-class approach and includes sustainability leaders from each industry. The annual review is based on a thorough assessment of corporate economic, environmental and social performance, covering issues such as corporate governance, risk management, labor practices, climate change and supply chain standards. The DJSI results are available to asset managers around the world for a variety of sustainability-driven investment portfolios. Weyerhaeuser Company, one of the world's largest forest products companies. Weyerhaeuser is principally engaged in the growing and harvesting of timber; the manufacture, distribution and sale of forest products; and real estate construction, development and related activities.