Archaeological evidence indicates that Cornwall has a history of tin production dating from at least 1800 BC. From the Bronze Age the County was an important producer of tin, which when mixed with copper forms the alloy bronze.
Until the 14th century tin was produced from rich alluvial deposits. By the 18th century Cornwall had developed into the world's major producer of tin and copper as well as commercially producing many other metals including lead, silver and arsenic.
By the early 19th century Cornwall was the world's most technologically advanced mining district.
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