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The Koivu mine is one of the largest titanium mines in Finland. The mine is located in Central Ostrobothnia.〔 The mine has reserves amounting to 62.2 million tonnes of ore grading 7.75% titanium.〔 == 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「Koivu mine」の詳細全文を読む スポンサード リンク
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