United States Gypsum Company is a subsidiary of USG Corporation, which offers a range of building products to its customers. Founded in 1901, United States Gypsum Company is a manufacturer and marketer of gypsum products. The company provides SHEETROCK gypsum panels, SHEETROCK ready-mix joint compounds and DUROCK cement boards in various specifications. Its specialized gypsum products are used in soil nutrients and conditioners, tool and mold making and pharmaceuticals. United States Gypsum Company also offers shaft wall systems, recycled paper and plasters in several configurations. The company employs more than 6,500 people and operates over 20 gypsum board plants in the United States. It maintains a location in Chamblee, Ga.