Allied Mineral Products, Inc.
Almatis
Alsey Refractories Company
Alteo
AluChem, Inc.
BNZ Materials, Inc.
Calderys
Calucem
Christy Industrial Holdings
CMC Cometals
Electro Abrasives Corp.
F
FX Minerals, Inc.
Great Lakes Minerals
HarbisonWalker International (formerly ANH Refractories)
Hotwork-USA LLC
Imerys Refractory Minerals
Kyanite Mining Corporation
Larkin Refractory Solutions
Missouri Refractories
The Nock and Son Company
Plibrico Company LLC
Possehl Erzkontor North America Inc.
RATH USA
Reno Refractories, Inc.
Refractarios Iunge Ltda.
Refractarios Peruanos S. A.
RESCO Products
Refractory Minerals Co., Inc.
RHI Magnesita
Riverside Refractories, Inc.
Ribbon Technology Corporation
Sintertec
Special Shapes Refractories Co., Inc.
Thermal Ceramics
Thermal Refractory
Unifrax Corporation
U.S. Electrofused Minerals, Inc.
Vesuvius
Wahl Refractory Solutions, LLC
Washington Mills Electro Minerals Corp.
Whitacre Greer Company
