Washing ore to extract gold, 1683. Water is fed into a sieve (2) containing ore. The muddy solution is then fed along wooden collecting troughs, often lined with dark woollen cloth. The gold is separated out on the way. From a 1683 English edition of Lazarus Ercker's Beschreibung allerfurnemisten mineralischen Ertzt of 1580. | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Heritage Images / Ann Ronan Picture Library |
Bildgröße: | 2864 px × 3660 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |