Mainly a tin mine that also produced sizeable amounts of cobalt, Gt Dowgas lies about one and a half miles southeast of St. Stephen, west of St. Austell. It includes Wheal Unanimity and later worked with Ventonwyn Mine.
Great Dowgas Tin Mines Ltd. produced 129 tons of black tin in the years 1838, 1856-1859 and 1907. It also raised 4 tons of cobalt ore in 1857. The mine closed in 1913.
Mining historian Thomas Spargo (1865) did not have a lot to say about Great Dowgas. He writes simply '... Tin mine, in St. Stephens, was always a poor mine, and the works have wholly ceased, at least underground, but the sett, I believe, has not been surrendered'.
References
- Henwood, W.J. (1843): On the Metalliferous Deposits of Cornwall and Devon. Transactions of the Royal Geological Society of Cornwall 5, 1-386.
- Spargo, T. (1865): The Mines of Cornwall and Devon: Statistics and Observations. Victoria Press (London), 188 pp.
- Collins, J.H. (1892): "A Handbook to the Mineralogy of Cornwall and Devon", 2nd ed., D. Bradford Barton Ltd. (Truro), 108 pp.
- Dines, H.G. (1956): The metalliferous mining region of south-west England. HMSO Publications (London), Vol. 2, pp. 544-545.
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