Mining terminology

thumb|right|The Kintore Headframe and winding drums in Broken Hill, New South Wales thumb|Headframe at the Great Western Colliery in [[Hopkinstown Wales UK]] thumb|The steel headframe of the Ottiliae shaft (1876) in Clausthal-Zellerfeld, the oldest existing headframe in Germany

thumb|Overburden at a coal mining site In mining, overburden (also called waste or spoil) is the material that lies above an area that lends itself to economical exploitation, such as the rock, soil, and ecosystem that lies above a coal seam or ore body. Overburden is distinct from tailings, the material that remains after economically valuable components have been extracted from the generally finely milled ore. Overburden is removed during surface mining, but is typically not contaminated with toxic components. Overburden may also be used to restore an exhausted mining site during reclamation

thumb|right|300px|Illustration of mine collapse aftermath, from 1878

dimensionless quantity related to porosity

mining term for the surface where the mining work is advancing

German miners' greeting phrase

The lachter (also Berglachter) was a common unit of length used in the mining industry in Europe, usually to measure depth, tunnel driving and the size of mining fields; it was also used for contract work. In most German-speaking mining fields it was the most important unit of length.

geological measurement

Wikimedia set index article (minerals with the same trivial name)

Set index articles (minerals with the same trivial name)

thumb|Medieval Pinge and ring-shaped bank at a mineshaft on the Ochsenhügel near Suhl in Germany's [[Thuringian Forest]] thumb|The Pinge of an iron ore pit near Warstein A Pinge ([ˈpɪŋə], plural: Pingen) or Binge ("binger") is the name given in German-speaking Europe to a wedge-, ditch- or funnel-shaped depression in the terrain caused by mining activity. This depression or sink-hole is frequently caused by the collapse of old underground mine workings that are close to the Earth's surface. Unlike natural landforms, a Pinge is a direct result of human activity. The term has no direct equivalen

Set index article (minerals with the same trivial name)

old name for a large group of minerals, soap clays