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 | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / UIG / Universal History Archive |
Bildgröße: | 3698 px × 4726 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |