Extensive working on a number of interconnected levels. Spectacular secondary copper deposits. Accesible but gated off. Prolific producer of copper ore for a time.
| Year | Activity |
|---|---|
| c1790s | Ore discovered, Sir Robin Williams owns lease |
| c1800 | Barracks constructed |
| c1804 | Ore being sold, dragged by sled to Snowdon Ranger |
| 1844 | Leased by Sneyd family |
| 1847 | Snowdon and Dalawin Company. Working on 6 levels. |
| 1850 | Shares offered in Snowdon Copper Mine, with 24 men working |
| 1851 | Cwm Dyle Rock and Green Lake Copper Mining Company. |
| 1853 33’ | diameter waterwheel and stamps installed |
| 1855/56 | Severe winter |
| 1857 | Sold to Cwmdyle Copper Mining Company |
| 1861 | £2,933 of ore sold at Amlwch |
| 1871 | Offered for sale by SNowdon Copper Mining Company Ltd. |
| 1872 | Edward Spargo obtains lease |
| 1873 | Spargo launches The Great Copper Mining Company Ltd., nominal capital £120,000 |
| 1875 | Winding up |
| 1890 | North Wales United Mines, operating for 7 years employing up to 42 miners and 35 at surface |
| 1898 | Britannia Copper Mine |
| 1898 | Built Britannia Mill at Llyn Llydaw |
| 1904 | Work at standstill |
| 1907 | Recommences operations |
| 1915 | Penypass Copper Company |
Sumary from Bick
External Links
Publications (15)
- (1925); BGS - Mineral Resources of GB (c1920s) Vol XXX - Copper Ores: Midlands, Lake District & N Wales; 102 pages
- (1991); CATMHS - Newsletter 031-November; 31 pages
- (1997); CATMHS - Newsletter 051-October; 20 pages
- (2001); CATMHS - Newsletter 065-October; 30 pages
- (2002); CATMHS - Newsletter 067-April; 32 pages
- (2010); CATMHS - Newsletter 098-February; 38 pages
- (2014); CATMHS - Newsletter 117-November; 32 pages
- Agnew, J.L. (1989); PDMHS (Peak District Mines Historical Society) 10-6 Win - Hafod-y-Porth Copper Mine, The; 9 pages (359-367)
- BGS - Mine Plans (large, zoomable) - Section Of The Snowdon Mine (brittania Mine); 1 pages
- BGS - Mine Plans (large, zoomable) - Section Of The Snowdon Mine (brittania Mine); 1 pages
- BGS - Mine Plans (large, zoomable) - Snowdon Or Brittania Mine; 1 pages
- Bick, D.E. (2003); Old Copper Mines of Snowdonia, The; pp. 98-111
- Colman, Timothy B. and Laffoley, Nicholas d'A. (1986); PDMHS (Peak District Mines Historical Society) 09-5 Sum - Brittania or Snowdon Mine; 19 pages (313-331)
- GCPC (1995); Ogofa 4; pp. 16-17
- Jnl. Cwmbran Caving Club, 9; pp 30-31
