There was a Sims engine, erected in 1841-3, at the Ty Gwyn copper mine in
Llandudno. There is a photograph of the engine-house, which does seem to have
been taller than normal, in my Great Orme Mines (British Mining No 52), p30.
Christopher J Williams, 65 Stancliffe Avenue, Marford, Wrexham LL12 8LN
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