By Bob Takai
(lbma.org.uk) - Few may know that Kyoto is considered the birthplace of Japan’s precious metals refining. It wasn’t until the 15th century that Japan became one of the world’s top producers of gold and silver, with the Sado Gold Mine and the Iwami Silver Mine at the centre. Yet, due to limited technology, gold and silver couldn’t be extracted from copper ores; instead, the crude copper containing these precious metals was exported, at the price of copper.
