• Beavertown Block Co.

• Bend Industries

• Beton Bolduc Inc.

• Beton Provincial Ltee

• Bloch Lumber Company

• Block USA

• Blocklite

• Boehmers

• Bolton Block Co.

• Boro Lumber & Timber

• Brickyard Inc.

• Brown's Concrete Products Ltd.

• Browning Moore Zucker Ackerman

• Calgary Masonry Supplies (1993) Ltd.

• California Mantel, Inc

• Cambridge Seven Associates, Inc.

• Capitol Concrete Products Co.

• Cedar Canyon Wood Works

• Celli-Flynn & Associates

• Century Concrete Products

• Chan Krieger & Associates

• Chicopee Mason Supplies, Inc.

• Cindercrete Products Ltd.

• Circle Redmont, Inc.

• Coast Masonry Supplies A Division of CCI Industries

• Dagostino Building Blocks