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The Toi gold mine (Japanese: 土肥鉱山, also 土肥金山) was an important gold mine of Japan, located within the city of Toi, Izu Peninsula, Shizuoka Prefecture. ==History== Small-scale gold mining is said to have started at Toi around 1370 during the period of the Ashikaga Bakufu.〔Toi Gold Museum〕 The gold mine was operated on a large scale from the time of Tokugawa Ieyasu in the late 16th century. Several mines were open in 1577, but Tokugawa Ieyasu endeavored to their development from 1601.〔 He put the exploitation of the mine under the responsibility of Gold Mine Minister (金山奉行) Ōkubo. Toi was one of several goldmines of the Izu Peninsula, such as Yugashima or Nawaji,〔 totaling about 60 gold mines in Izu alone.〔 The gold and silver produced by these mines permitted the production of Tokugawa coinage, and allowed for the prosperity of the Tokugawa. The city of Toi itself became highly prosperous, with numerous trades flooding in to service the workers and the administration at the gold mine, so that Toi became known as "Toi Sengen" (土肥千軒, "Toi of the 1,000 shops").〔 The mine became less productive as it became flooded.〔 Workers were killed because of the exhausting conditions due to seeping hot springs, and poor oxygen content of air, leading to the installation of water pumps and ventilators at numerous intervals.〔Toi gold museum〕 In 1917, gold was again discovered at the mine, and exploitation continued under the company Toi Kinzan KK. In 1931, the mine entered Sumitomo Group, and passed under Toi Kōgyō KK in 1942. The mine was ultimately closed in 1965 and then reopened for tourism.〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Toi gold mine」の詳細全文を読む スポンサード リンク
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