Naoshima
Naoshima is a small island belonging to Kagawa prefecture in Shikoku. Although part of Kagawa, it is much closer to Honshu. Naoshima has a large smelter run by Mitsubishi Materials, which was opened in October 1917. Naoshima was elected as the central smelter due to its location - there were many copper mines along Seto Inland Sea, which Naoshima also locates. Mitsubishi first planned to build their plant on Teshima island but it was rejected by the local inhabitants of T