Cwmorthin Slate Company

The Cwmorthin Slate Company was formed in 1861 with £100,000 of share capital to work the Cwmorthin slate mine near Blaenau Ffestiniog, building a tramway to the Ffestiniog Railway and two dressing mills. A legal dispute forced its closure in 1901, after which the Oakeley Company took over parts of the site.

Mines operated