Brick History - ClayClay
2012-2-21 · Fletton or London Brick; is a brick made from clay extracted from the south east of England which contains traces of oil which is burnt off during the burning process in the kiln. Arch and Clinker bricks This term is used for bricks which are burned immediately. They are over burnt and sometimes distorted in shape. Body, Cherry and/or hard bricks.
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