World Minerals Inc. is a world leading supplier of engineered mineral products derived from diatomaceous earth and expanded perlite, natural raw materials possessing unusually light density, chemical inertness, high surface area and intricate structure. As a result of these unusual properties, the company's products are used in a host of applications, including filtration for liquid/solid separation, functional fillers for paints, coatings, polymers and elastomers, bioreactor support, and in the promotion of plant growth. In addition, World Minerals is a leading supplier of semi-finished products, such as crushed and scree