A Building Product Supplement on the concrete block industry. Considers the implications for the industry of the proposed Europe an trade harmonization in 1992 involving the drawing up of the new Eurocodes and supporting standards . Discusses how architects can protect themselves from negligence claims resulting from a building design or material fault by becoming insured and insisting that manufacturers supply materials which have quality assurance . Reports on how manufacturers Aerated Concrete, Celcon Blocks, Thermalite and Tarmac Topblock gained their Agrement Certificate s and looks at how concrete block makers have responded to more stringent thermal insulation regulations. Describes a new concrete block, Aircrete and looks at two applications. Describes how the company Rebastone are successfully producing blocks which blend with natural stone and the use of concrete as a facing material. Explains how careful packaging of blocks can cut building costs and why masonry blocks hav