Also in @RoyalCornwall, the famous Artognou slate found in 1998 at Tintagel, Cornwall, a major 5th-6thC site :)pic.twitter.com/7OqVoUiv8s
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@DorothyKing control of tin perhaps gave rulers at Tintagel etc big advantage, w/ this material then being used as elite gifts etc by them?
@DorothyKing (that's would be my suggestion anyway! I've argued in past that comparison to use of Roman imports in Scandinavia=useful :) )
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