Conglog Slate Quarry

Gwynedd, United Kingdom

Conglog quarry was a small enterprise situated to the north-west of Tanygrisiau, near Blaenau Ffestiniog in Wales. It was overshadowed by the much bigger Rhosydd quarry a little further to the west. It was active from 1854 to 1910, and was operated by an individual, two partnerships and four separate companies over this period.

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Mine data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).

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