Amalgamation: St. Aubyn United. Operating as Grambler and St Aubyn, these mines collectively extracted 8,450 tons of copper ore and 54 tons of black tin. During the period from 1871 to 1893, St Aubyn United mines alone yielded 1,390 tons of copper ore with a grade of 6.5%, along with 43 tons of black tin and approximately 300 tons of fluorite.
1840-1856 1866-1872 1872-1893
External Links
Publications (3)
- Dines, Henry George (1956); BGS - Regional Memoirs - Metalliferous Mining Region of South West England Vol1, The; 567 pages
- Dunham K. (1952); BGS - Mineral Resources of GB (c1920s) Vol IV - Fluorspar; 162 pages
- Joseph Yelloly Watson (1843); Compendium of British Mining, with Statistical Notices… & Glossary; 97 pages
