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Slate quarries - Speaking and listening: Video playlist - BBC Bitesize
An introduction to the north Wales slate industry.
↗ https://www.bbc.co.uk/bitesize/topics/z3m2pv4/watch/zmjc87hAn introduction to the north Wales slate industry.
↗ https://www.bbc.co.uk/bitesize/topics/z3m2pv4/watch/zmjc87h