UK Grid Reference: SX096777
Latitude: 50°34'2"N
Longitude: 4°41'20"W
References
H G Dines, The Metalliferous Mining Region of South-West England Vol 2, p579.
A K Hamilton Jenkins, Mines & Miners of Cornwall, Vol XVI, pp 10-12
First worked as Great Michell Consols from 1848 until its abandonment in 1848. The set was then worked as Great Onslow Consols from 1851 till around 1870-1880 (HJ)
During 1853-6 and 1860, the mine produced 935 tons of 3.5% copper ore, and from 1856-60, tons of pyrite (Dines)
Mineral List
8 entries listed. 7 valid minerals.
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