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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 South Wheal Frances Mine ： ウィキペディア英語版 South Wheal Frances Mine South Wheal Frances is a former mine accessing the copper and tin of the Great Flat Lode south of Camborne in Cornwall, England. ==Mine== Mining began in the local area in the early 1720s. Mining for copper was first documented at the site in the 1820s. After Lady Frances Bassett, the mineral Lord, offered a new lease on the land in 1834 production resumed.〔(【引用サイトリンク】title=Wheal Frances Mine )〕 Tin mining commenced in 1852. The mine complex is centred on Marriott's Shaft which had been sunk sunk by 1845. It was at its most productive between 1844 and 1895. Altogether 67,866 tons of copper and 9,716 tons of tin ores were extracted. After the extent of the Great Flat Lode was discovered in 1872-74 a winding engine house was built at Pascoe's Shaft in 1879 and a pumping engine house housing an 80-inch cylinder was built in 1887.〔 A 75-inch cylinder pumping engine house with a was built at Marriott's shaft in 1847 and pumped water from Pascoe's shaft as well as Marriott's. In 1857 a 24-inch winder was installed in close proximity.〔 An engine house housing a 30-inch cylinder engine for both pumping and winding was built at the Daubuz shaft between 1979 and 1881. The shaft was sunk when mining reached the Great Flat Lode and was named after a company shareholder. The mine was owned by South Frances United in 1892 and the company amalgamated with neighbouring Wheal Basset in 1895 becoming the Basset Mines.〔 Between 1896 and 1899 a major refurbishment of the shaft was undertaken, enabling mining to take places as far down as 6,000 feet.〔 By the early 20th century, several thousand men, women, bal maidens, and children worked in the mine. A slump in tin prices during World War I led to the mine's closure in 1918.〔 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「South Wheal Frances 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.