• Carolina Ceramics

• Castaic Brick, Inc.

• Central Precast Inc.

• Circle Redmont, Inc.

• Cold Spring Granite Company Inc.

• Collective Designs

• Concrete Designs Inc.

• Curv-Rite Aluminum Edgings

• D'Hanis Clay Products

• Dagostino Building Blocks

• Degussa Admixtures

• Delaware Quarries, Inc.

• Detering Co.

• Duke Concrete Products, Inc.

• Dura Art Stone

• Eden Stone Company

• Eldorado Stone Corp.

• Endicott Clay Products Co.

• Envirospec, Inc.

• Envirospec, Inc.

• Express SawCutters, Inc.

• Fleetwood Building Block

• Fletcher Granite Company, Inc.

• FlorLine Midwest

• General Shale Products Corp.

• Genest Concrete