• Oldcastle APG

• Arriscraft International

• Arto Brick

• Betz Cut Stone Ltd.

• Building Systems Co.

• Chicopee Mason Supplies, Inc.

• Coronado Stone Products, Inc.

• Edison Coatings, Inc.

• Endicott Clay Products Co.

• Omega Products International, Inc.

• Shouldice Designer Stone

• Stone Legends

• Stone Magic

• Vermont Structural Slate Company, Inc.