Stock Photo: Raising water from a mine using two sets of overshot water wheels and suction pumps. From De re metallica, by Agricola, pseudonym of Georg Bauer (Basle, 1556). Woodcut.

Stock Photo: 1746-1903 Raising water from a mine using two sets of overshot water wheels and suction pumps.  From De re metallica, by Agricola, pseudonym of Georg Bauer (Basle, 1556).  Woodcut.