List of quarries served by the Ffestiniog Railway The quarries The quarries

| Name_ | Mineral | Opened | Closed | Years_connected | Notes_ |
|---|---|---|---|---|---|
| Moelwyn Zinc | Zinc, Manganese and Silver | c1892 | by 1919 | 1892-by 1919 | Zinc mine just west of the north portal of the old Moelwyn Tunnel. |
| Oakeley | Slate | 1878 | 2010 | 1878-1950s | Formed by the amalgamation of the Cesail, Matthews and Glan-y-Pwll quarries. Was the largest single quarry in Blaenau Ffestiniog. Was the home of the Gloddfa Ganol tourist attraction in the 1980s and 1990s. Now worked as an open pit by Alfred McAlpine Ltd. |
| Rhiwbach | Slate | 1812 | 1953 | 1860–1953 | Remote quarry situated 4 miles (6.4 km) east of Duffws station and connected via the Rhiwbach Tramway |
| Syenite Setts | Granite | 1874 | 1916 | ? | Quarry later worked as Brooke`s |
| Votty & Bowydd | Slate | 1870 | 1964 | 1870–1962 | Formed by the amalgamation of the Hafodty and Bowydd quarries. |
| Wrysgan | Slate | 1830s | 1946 | 1844–1946 | Connected to the railway near Tanygrisiau via a single long incline ending in a tunnel. |