As an offshoot of our commitment to protecting the environment, we have
developed markets for most of the byproducts generated by our production
processes, transforming our manufacturing operations largely into
closed-loops requiring very little solid waste disposal. The largest volume
byproduct of our activities that is not recycled into our own manufacturing
processes is silica fume (also known as microsilica). This dust-like material,
collected in our plants' air filtration systems, is used as feedstock in making
products used in the production of concrete additives, refractory materials and oil well conditioners.
Our U.S. Globe Metallurgical unit sells its raw silica fume principally to our wholly owned subsidiary, Norchem Concrete Products, which process it into final products. Our Argentine unit, Globe Metales, supplies its fume directly to concrete producers.