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Chilean mill : ウィキペディア英語版 | Chilean mill The Chilean Mill was a machine used on gold fields in an early period of gold mining. The machine was composed of two rotating wheels the would revolve over a pan filled with gold-bearing rocks. The idea was that the wheels would break open the rocks with gold, so they could harvest gold from multiple rocks at a time. One of the earliest such machines was built in Ballarat in Victoria, Australia during the Victorian gold rush and was combined with a sluice for extracting the gold.〔Davey, Christopher. The origins of Victorian Mining Machinery. Volume 19 The Artefact, 1996. pp 52-62〕 ==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「Chilean mill」の詳細全文を読む
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