USG Corporation (USG), through its subsidiaries, is a manufacturer and distributor of building materials, producing a range of products for use in new residential, new nonresidential, and repair and remodel construction, as well as products used in certain industrial processes. The Company is organized into three reportable segments: North American Gypsum, Building Products Distribution and Worldwide Ceilings, the net sales of which accounted for approximately 46%, 38% and 16%, respectively, of its consolidated net sales during the year ended December 31, 2008. North American Gypsum manufactures and markets gypsum and related products in the United States, Canada and Mexico. Building Products Distribution consists of L&W Supply, a specialty building products distribution business in the United States. USG’s Worldwide Ceilings segment manufactures and markets interior systems products worldwide.