Establishments primarily engaged in manufacturing concrete building block and brick from a combination of cement and aggregate. Contractors engaged in concrete construction work are classified in Division C, Construction, and establishments primarily engaged in mixing and delivering ready-mixed concrete are classified in Industry 3273.
- Architecture block concrete: e.g. fluted, screen, split, slump,
- Blocks, concrete and cinder
- Brick, concrete
- Paving block, concrete
- Plinth blocks, precast terrazzo