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Through subsidiaries such as Unimin Specialty Minerals, Unimin Corporation has grown from a small glass sand mining company to become one of the world's leading industrial mineral producers. Its products are the essential raw materials utilized in a variety of manufacturing processes. The company s objective is to produce engineered industrial minerals, which add function and value to its customers' processes. From the ores it uses, Unimin produces uniform silica sands, nepheline syenite, feldspars, olivine, microcrystalline silicas, ball clays and kaolins, dolomite, talc, calcium carbonate, magnetite, barite, bentonite clays and high purity quartz. The company is a worldwide supplier to the glass, fiberglass, ceramic, semiconductor, quartz lighting, paint and coatings, fiber optics, foundry, oil and gas industries. Unimin Specialty Minerals has a location in Elco, Ill.