Norbord Mississippi is one of Norbord s 15 lumber plants in the United States. Located in Guntown, Miss., this plant specializes in the production of oriented strand board (OSB). Headquartered in Toronto, Norbord is an international producer of wood-based panels with assets in excess of $1.3 billion. In addition to OSB, its plants manufacture particleboard, medium-density fiberboard (MDF),...