The shafts are situated to the east of Cligga Head.
An ancient mine originally worked for tin, Great St George Mine was first mentioned in 1589. Mining for copper in the area was occurring in the late 18th C, between 1800-04, Great St George Mine raised 1507 tons of copper ore (149 tons copper metal), selling for £14559. However, By 1812, the mine was returning small amounts of ore.
References
- Dewey, H. (1923): Special Reports on The Mineral Resources of Great Britain, Copper Ores of Cornwall And Devon. pp. 18-19
- Dines, H.G. (1956): The metalliferous mining region of south-west England. HMSO Publications (London), Vol. 1, pp. 452-457 (see also corrigenda in the 1994 reprint).
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