English Copper Co
1691 The Company received a Charter as a joint stock company for smelting copper, including improving the process[1].
1742 The Melincryddan Copper Works was taken over by the Governor and Co of Copper Miners in England (otherwise known as the English Copper Co).
By the 1760s the company was employing capital of £150,000 subscribed by merchants and "gentlemen", especially from the London area.
c.1830 Mary, George and Thomas Townsend Glascott established a copperworks which was known as the Cambrian Copperworks, near to the Nevill's copperworks.
1838/9 J. H. Vivian and Sons took over the Taibach/Cambrian/Margam Copper Worksfrom the English Copper Co.[2]
c.1841 The English Copper Company continued their operations at the Cambrian works until around 1841.
1840s Rapid expansion of the Cwmavon works
1845 The Taibach Copper Works produced coins for Singapore and India.
1848 The Bank of England took over the mortgage of the Cwmavon works
1849 The Llanelly Copperworks Co took over the disused Cambrian Copperworks and converted it into a lead and silver smelting works.
1852 The Cwmavon works was transferred to a reconstituted Company of Common Miners.
1875 The English Copper Co was put into liquidation. The Cwmavon works was operated by a company established for the purpose (the Copper Miners Tinplate Co)
1884 Cwm Avon Copper Works were taken over by Rio Tinto Co.[3]
1906 Rio Tinto Co disposed of the copper section of the company.