A. P.  Green Industries
AGM Industries, Inc.
Alpha Associates, Inc.
Armstrong Products
Carboline Fireproofing Products
Ceel-Co Products
Childers Products
Darco Southern, Inc.
Dow Urethane
E Insulation
Fiberex Mineral Wool
Forrest Mfg. Co.
Foster Mastics
Gerrard & Company Strapping

Harbison Walker Refractories
Howred Corporation
Industrial Insulation Group (Calsilite/Johns Manville)
Lewco Specialties Products, Inc.
Nelson Heat Tracing Products
Owens Corning Fiberglass
Pamrod Products, Inc.
Premier Refractories
RPR Metals
Rockwool Manufacturing Company
Sproule Insulation
Talon Products, Inc.
Thermon Manufacturing Company