text: The Romans made full use of the brown- and ochre-coloured stone in the Weald, and many of their roads there are the means of transport for the ore, and were extensively metalled with slag from iron smelting. The sites of about 113 bloomeries have been identified as Roman, mainly in East Sussex.  The Weald was in this period one of the most important iron-producing regions in Roman Britain.  Excavations at a few sites have produced tiles of the Classis Britannica, suggesting that they were actually run by, or were  supplying iron to this Roman fleet.  Total iron production has been estimated at 750 tons per year, but under 200 tons per year after 250 AD.