Almatis
Alteo
AluChem, Inc.
AC Tech
ACerS
Calucem
CIMSA
FX Minerals, Inc.
Elkem
Gorka Corp
Great Lakes Minerals
Hindalco
Imerys Refractory Minerals
Kyanite Mining Corporation
Kymera International
Refractory Minerals Co., Inc.
Ribbon Technology Corporation
Sintertec
Traxys
U.S. Electrofused Minerals, Inc.
Washington Mills Electro Minerals Corp.
