Washing for tin, 1556. After digging out a substantial amount, miners would alter the course of the stream, washing away light material and leaving tin-bearing ore. From De re metallica by Georgius Agricola. (Basel, 1556). | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Heritage Images / Ann Ronan Picture Library |
Bildgröße: | 2514 px × 4163 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |