The mines shown in figures 1-3 are in the Harz region.
[Figures 4] and [5] show the St. Anna mine in the Erzgebirge, near Freiberg, as illustrated on a medal in the Brunswick museum. Prominent in [figure 4] is an aqueduct, one function of which is to supply a waterwheel in the house below, which in turn delivers power through the Stangenkunst to two open shafts. The reverse ([fig. 5]), an unusually fine view of the inner workings of a mine, shows, above ground, a typical horse whim driving a bucket windlass. Below ground is shown a crank-driven piston pump typical of those driven by Stangenkunst. In this case, however, it is driven by an underground vertical treadmill.
Figure 3.—Brunswick Silver 4 Taler, Ernst August, 1685. (U. S. National Museum, Paul A. Straub coll.; Smithsonian photo 43334-A.)
Figure 4.—Medal, 1690, Showing St. Anna Mine, near Freiberg. (Photo courtesy of Stadtisches Museum, Braunschweig.)
