Weyerhaeuser Co. engages in the manufacture, distribution, and sale of forest products. It operates through the following segments: Timberlands, Wood Products, and Cellulose Fibers. The Timberlands segment manages private commercial forestland worldwide. This segment is engaged in growing and harvesting trees for lumber, building, pulp, paper and other wood products. The Wood Products segment delivers lumber, structural panels, engineered wood products and complementary products for residential and commercial applications. This segment offers homebuilding solutions and exports its softwood lumber and engineered building materials to Asia and Europe. The Cellulose Fibers segment produces absorbent fluff, which is used in diapers; manufactures liquid packaging board and other pulp products, which are used in the production of liquid product containers; and generates energy from black liquor produced at the mills. The company was founded by Frederick Weyerhaeuser in January 1900 and is headquartered in Federal Way, WA.