Vancouver, British Columbia, Canada, 11 October 2007 -- Ainsworth Lumber Co. Ltd. today announced that it will curtail operations at its oriented strand board (OSB) mills in Cook and Bemidji, Minnesota, due to log supply shortages, high production costs, and a decline in OSB orders.

The Cook mill’s closure takes effect immediately and the Bemidji mill’s closure is planned to take effect 19 October. Production is expected to resume at Cook on 22 October and at Bemidji on 29vOctober. Log deliveries will continue to be accepted during these closures.

About Ainsworth

Known for its innovation, quality, and service, Ainsworth is a leading international manufacturer and supplier of engineered wood products for residential, commercial, and industrial applications. For more than half a century, Ainsworth has been respected as a successful forest products company with people who take pride in their work. The company has operations in British Columbia, Alberta, and Ontario in Canada, and in Minnesota in the United States. Ainsworth is committed to maintaining the integrity of the environment through responsible and sustainable forest management and stewardship.

Ainsworth Engineered OSB and plywood products are APA-certified and known for their consistent quality and reliability. For more information about Ainsworth, visit www.ainsworth.ca.