Magnesia is widely used primarily as wallboard alternative to conventional gypsum-based drywall and plywoods. The company produces cement, concrete, construction aggregate, gypsum, wallboard, paperboard, and sand for hydraulic fracturing. New West Gypsum Recycling began recycling of wallboard waste in Canada in 1985. Midland was also the site of a large plant that produced wallboard and plasterboard. Since 2007 National Gypsum has operated a wallboard plant in Mount Holly. Plaster veneer wallboard is blue or gray . Plasticizers can be added to wallboard stucco mixtures to improve workability. It can also be found in insulation, siding, roof gutters, and cement wallboard. The interior was insulated, finished with wallboard, portholes and a door. She used mostly wallboard and tubes of Tinsol, an oil-based paint. Some manufacturers take back waste wallboard from construction sites and recycle it into new wallboard. Some manufacturers take back waste wallboards from construction sites and recycle it into new wallboard. The lower water usage allows lower energy use to dry the wallboard. J.D. Irving Limited for production into wallboard.