Historical background
An
unusual feature of the mines on Mynydd Parys was the practices
of precipitating copper-rich waters which had been allowed
to permeate through the mine or over the tips with scrap iron
in large purpose built ponds to yield
ore which could then be dried. This process outlasted the end
of conventional mining in the 1880s, and continued until 1958.
Key historic landscape characteristics
Unique industrial features
The vast ponds survive all around the mountain, many of them
still holding water. The best surviving examples are at Dyffryn
Adda (SH 438 915), together with an ochre-drying floor and
a kiln building dating to 1815-19. This area has been conserved
by the Amlwch Industrial Heritage Trust. A small part of the
Dyffryn Adda SAM falls into this area.
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Character Map