Re dating mill ditches. The medieval example excavated at Usk (by
numerous sections) in the 1960s and 1970s was thought to be the roman
fortress ditch for many years on the basis of the artefacts until radio-
carbon dates suggested otherwise. It certainly had Roman rather than
medieval potery in its lower levels and is a classic example of how
difficult such features are to date.
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Paul Courtney
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