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17Feb94 UK: ARCHAEOLOGISTS DISCOVER ROMAN MOSAIC DURING ADVANCE WORKS FOR JUBILEE LINE EXTENSION.

Archaeologists have discovered a Roman mosaic during advance works for the £1.8 billion Jubilee Line extension. The mosaic was found several feet below the concrete floor of London Bridge station's Victorian basement.Only the mosaic's border has survived intact. Its blocks date to the middle of the second century AD.The Museum of London said the mosaic belonged to a high quality building that formed part of a Roman suburb built around the southern bridgehead of the first London Bridge.A joint venture of Costain and Taylor Woodrow is building the complex £76 million Jubilee Line station at London Bridge.Work has so far concentrated on trials in London clay using the New Austrian Tunnelling Method. CONSTRUCTION NEWS