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NGC Home  ->  About Us  ->  Gypsum Board, Cement Board, Interior Finishing Products, Company Info  ->  Gypsum Board Production Gypsum board begins with gypsum (calcium sulfate). The mineral is crushed and calcined (baked). Water is added and the liquid slurry is sandwiched between two pieces of paper. After drying, the gypsum board is ready for delivery. Click here to view the process. © National Gypsum Properties, LLC 2001 - 2008 | Privacy Statement

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