Letter: Britain is still rich in clay

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The Independent Online
IN HER otherwise excellent article, Caroline McGhie states that clay bricks no longer contain any clay at all, simply cement and sand ('Great feats of clay', Review, 10 July).

Clay bricks, made of clay, represent 92 per cent of the overall brick market. Concrete bricks account for 6 per cent and calcium silicate bricks 2 per cent. Clay is a rich natural resource, and about 1,200 types are available in the UK.

Dianne Smith

The Brick Development


Windsor, Berks