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The Sado mine is a large gold and silver mine on the island of Sado in Niigata Prefecture, Japan. The mine was worked from 1601 until 1974, and closed in 1989.〔 == References == 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「Sado mine」の詳細全文を読む スポンサード リンク
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