Allied Mineral Products, Inc.
Alsey Refractories Company
BNZ Materials, Inc.
Chase Nedrow Industries
Christy Industrial Holdings
HarbisonWalker International
MINTEQ International
Mt. Savage Specialty Refractories
The Nock and Son Company
Plibrico Company LLC
Refractory Sales & Service
Reno Refractories, Inc.
RESCO Products
Shinagawa Americas
Vesuvius
