American Forest and Paper Assoc. http://www.afandpa.org
Boise Cascade http://www.bc.com
Collins Products LLC http://www.collinswood.com
Cummins http://www.cummins.com
Federal-Mogul http://www.federal-mogul.com
Georgia Pacific http://www.gp.com
International Paper Company http://www.internationalpaper.com
Koppers http://www.koppers.com
Louisiana Pacific http://www.lpcorp.com
Masonite http://www.masonite.com
Potlatch Corp. http://www.potlatchcorp.com
Roseburg Forest Products http://www.rfpco.com
Sierra Pacific http://www.sierrapacificind.com
Sierra Pine http://www.sierrapine.com
Simpson Timber Co. http://www.simpson.com
Stimson Lumber Co. http://www.stimsonlumber.com
Timber Products Co. http://www.timberproducts.com
Weyerhaeuser Co. http://www.weyerhaeuser.com