Washing ore to extract gold. Water fed into sieve (2) containing ore. Muddy solution fed along wooden collecting troughs, often lined with dark woollen cloth: gold separated out on the way. From 1683 English edition of Lazarus Ercker Beschreibung allerfurnemisten mineralischen Ertzt of 1580. Copperplate engraving
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TOP15881614
Source:
達志影像
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RM
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