ABSTRACT

Situated southeast of the German city of Hanover, the ore-rich veins of

the Harz mountain region had been mined since the middle of the tenth

century. Because the deeper parts tended to fill with water, they could only

be mined so long as pumps kept the water at bay. During the seventeenth

century water wheels powered these pumps. Unfortunately, this meant that

the lucrative mining operations had to shut down during the cold mountain

winter season when the streams were frozen.