Cwm Nantcol
| Cilcychwyn | 1890–1891 | 1,360 tons |
| Pen Isa’r Cwm | 1886 | 13 tons |
| Foel Wen | 1889–1892 | 644 tons |
| Graig Uchaf | 1886–1892 | 7,787 tons |
| Hendre | 1889–1904 | 2,829 tons |
| Moelfre | 1886–1913 | 4,919 tons |
| Rhinog | 1891–1894 | 2,659 tons |
| Cilcychwyn | 1890–1891 | 1,360 tons |
| Pen Isa’r Cwm | 1886 | 13 tons |
| Foel Wen | 1889–1892 | 644 tons |
| Graig Uchaf | 1886–1892 | 7,787 tons |
| Hendre | 1889–1904 | 2,829 tons |
| Moelfre | 1886–1913 | 4,919 tons |
| Rhinog | 1891–1894 | 2,659 tons |