The biblical Tarshish has long been speculated with Britain and its tin mines.
Some believe it was Joseph of Arimathea who provided tin to Asia Minor. It is also speculated that during his time spent freely in Rome St. Paul visited the Cornish region and founded the first Church at Avalon.
Tarshish is the Biblical name for Crete. Caphtor is the Biblical name for Cyprus. The Cypriotes were the source of a big chunk of the Bronze Age copper supply. The Egyptians referred to them as the Keftiu.