Sectional view of a German mine showing the method of sinking shafts and driving horizontal galleries, 1556. A windlass is used to raise and lower men, materials and spoil. From De re metallica by Georgius Agricola. (Basel, 1556). | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Heritage Images / Ann Ronan Picture Library |
Bildgröße: | 2582 px × 4061 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |