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The Umm Naggat mine is a large mine located in the northern part of Egypt in South Sinai Governorate. Umm Naggat represents one of the largest tantalum reserves in Egypt having estimated reserves of 25 million tonnes of ore grading 0.015% tantalum. == 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「Umm Naggat mine」の詳細全文を読む スポンサード リンク
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