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Copper-smelters of Pen-clawdd, South Wales
1800 John Vivian, a Cornish copper mining entrepreneur and the company's agent in Swansea, became a partner of the Cheadle Brass Wire Co, at a copper smelting works at Penclawdd to the West of Swansea. This was the start of the Vivians' involvement in smelting.
1808 John Vivian withdrew his interest from the Cheadle company