Almatis
Alteo
AluChem, Inc.
Calucem
FX Minerals, Inc.
Gorka Corp
Great Lakes Minerals
Imerys Refractory Minerals
Kyanite Mining Corporation
Refractory Minerals Co., Inc.
Ribbon Technology Corporation
Sintertec
Traxys
U.S. Electrofused Minerals, Inc.
Washington Mills Electro Minerals Corp.
