Sectional view of German mine showing method of sinking shafts and driving horizontal galleries. Windlass at B,C used to raise and lower men,materials and spoil. From Agricola De re metallica Basle 1556. Woodcut | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / UIG / Universal History Archive |
Bildgröße: | 3333 px × 5242 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |