Teufe is the German mining term for depth.[1] The Teufe (hT) 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 to its distance from a reference surface 'above'.[2] The vertical distance between the surface and a point in the mine (Grubengebäude), i.e. the vertical depth, was formerly also called the Seigerteufe.[3] This difference is no longer made today. The terms Teufe and Seigerteufe are synonymous.[4]
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