Type: Copper Mine, Mine
The miners dwelt in caves within the copper-mine workings during the third and fourth centuries AD. The 'bun-ingots' produced here bore stamps which differed a great deal from the official military sigils, and probably represent the products of a civil contractor or local company, owned perhaps by a wealthy native landowner. The copper produced here and on nearby Anglesey, was very important to the economy of the British Isles, as, together with the tin mined in Cornwall they made Bronze, which allowed the technological advance from the Stone-Age. The availability of these native mineral resources allowed the British tribes of the late Neolothic period to remain independent of supplies from the continent, and encouraged a cultural diversification to develop between the British and Gallic Celts.