Lehigh Hanson, Inc. has a big crush on the concrete materials business in North America. The company, which is part of German construction materials firm HeidelbergCement, produces ready mixed concrete, aggregates, concrete block, concrete pipe, and pre-stressed concrete products in the US and Canada. Lehigh Hanson companies include Lehigh Cement Company and Hanson's North American operations. Other companies under the Leigh Hanson umbrella include Hanson Pipe & Precast, which makes concrete pipes, manholes, and precast concrete products and Hanson Brick & Tile. Its hardscapes division makes decorative paving stones for landscaping.