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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Ngwenya Mine ： ウィキペディア英語版 Ngwenya Mine The Ngwenya Mine is located on Bomvu Ridge, northwest of Mbabane and near the north-western border of Swaziland. This mine is considered to be the world's oldest. The haematite ore deposit was used in the Middle Stone Age to extract red ochre, while in later times the deposit was mined for iron smelting and iron ore export. ==Historic mining== Several stone age artefacts have been found in the mine during archaeological works in the late 1960s and early 1970s. Their age was established with radiocarbon dating as older than 20.000 years. Later, radiocarbon dating yielded the age of the oldest mining activities as 41,000 to 43,000 years. This would make Ngwenya the oldest known mine.〔(【引用サイトリンク】date=2008-12-31 )〕 The site was known to Early Man for its deposits of red and specular haematite, used in cosmetics and rituals. Red ochre from here was extracted by the ancestors of the San and used in rock paintings, which are common in Swaziland. By about 400 AD, pastoralist Bantu tribes had arrived from the north. They were familiar with the smelting of iron ore, and traded their iron widely throughout the African continent. 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「Ngwenya Mine」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.