Teufe
Teufe is the German mining term for depth. The Teufe indicates how deep a given point lies below the surface of an open-cast pit or below the ground level in the area surrounding the pit. By contrast the height, h, refers its distance from a reference surface 'above'. The vertical distance between the surface and a point in the mine, i.e. the vertical depth, was formerly also called the Seigerteufe. This difference is no longer made today. The terms Teufe and Seigerteufe are synonymous.
