C COVIA

Processed industrial minerals for industrial, agricultural and manufacturing uses; proppants for use in oil well and gas well hydraulic fracturing operations; hydraulic fracturing sands; coated and surface treated industrial sands for industrial and manufacturing applications; natural and blended industrial clays and ball clays for industrial and manufacturing applications; kaolin clays; bentonite clays; industrial silica; industrial silica sand; industrial quartz for industrial and manufacturing applications; industrial filtering sands and refractory sands for industrial and manufacturing applications; silicates, namely, monocrystalline silica, microcrystalline silica, amorphous silica and ceramic silica for industrial and manufacturing applications; cristobalite; nepheline syenite for industrial and manufacturing applications; potassium; feldspar, sodium feldspar, potassium feldspar and calcium feldspar for industrial and manufacturing applications; calcium oxides for industrial and manufacturing applications; calcium fluoride; precipitated calcium fluoride; calcium carbonate; dolomite; calcium borate, alumina, alumina tri-hydrate, glass alumina; alumina silicates; alumino silicates; sodium silicates; silicon dioxide; foundry sand; talc for use in industrial and manufacturing applications; zircon; industrial minerals, namely, colemanite, barite, huntite, magnesite, industrial mica, rutile, ilmenite, mineral based growing media and top dressings for soils; silicates; bauxite; industrial minerals used for refractory applications; industrial mineral sands for industrial and manufacturing applications; chemical additives for treating industrial minerals; chemical additives in the form of polymers for treating industrial minerals; chemical additives and catalysts for use with industrial minerals; unprocessed artificial and synthetic resins for use with industrial minerals

Industrial minerals, namely, non-metallic minerals for building or construction; quartz; sand; silica sand; silica gravel and silica powder; silica aggregates and carriers for building or construction; feldspar; limestone for building or construction; mineral based foundry construction materials, not of metal; mineral based refractory construction materials, not of metal; calcite