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Kuroko mine
The Kuroko mine is one of the largest lead and zinc mines in United States. The mine is located in north-western United States in Alaska.〔 The mine has reserves amounting to 37 million tonnes of ore grading 0.8% lead, 5.5% zinc, 0.73 million oz of gold and 55.6 million oz of silver.〔 == 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「Kuroko mine」の詳細全文を読む
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