> > >David,
> > >
> > >From experience with the Dublin and Waterford remains, particularly
> > >from the believed to be furnace slags, there was never any appreciable
> > >sized
> > >charcoal that would have had more than a few rings at best. In some
>cases
> > >though, timbers from the structure would be remaining and those were
>dated.
> > >It will be curious to see what kind of answers you get.
> > >
> > >Best, Mark Hall
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