A horizontal or nearly horizontal passage from the surface into a mine as contrasted to a shaft which is a vertical entry passage. An adit may be used for ventilation, haulage, drainage, or other purposes
The adit sloped downwards into the bowels of some long-fallen building, following a passage that had silted up when the city had first been buried.
The entrance to a mine; if driven into the earth vertically, or on a steep incline, the adit is called a "shaft"; if driven horizontally, it is called a "tunnel "
A nearly horizontal passage from the surface by which a mine is entered and dewatered A blind horizontal opening into a mountain, with only one entrance
A horizontal passage driven from the surface to work a mine or vein (A tunnel, for example, would be a passage driven to the opposite side of a hill or mountain)
An opening driven horizontally into the side of a mountain or hill for providing access to a mineral deposit Strictly speaking, an adit is open to the atmosphere at one end, a tunnel at both ends
- an entrance to a mine, usually a horizontal entrance rather than a vertical one
An opening driven horizontally into the side of a mountain or hill for providing access to a mineral deposit
A horizontal or nearly horizontal passage, driven from the surface, for the working or dewatering of a mine Also referred to as Drift, Shaft, or Portal
A small scale tunnel drilled into a coal seam for prospecting purposes Used by miners to collect samples to determine the coal's properties
A nearly horizontal underground excavation in an abutment having an opening in only one end An opening in the face of a dam for access to galleries or operating chambers
A nearly horizontal passage in an underground mine, driven from the surface, by which a mine may be entered, ventilated, or dewatered
a tunnel driven horizontally into a hillside to provide access to a mineral deposit
In mining, an entrance or approach; a horizontal excavation used as an entrance to a mine, or a vent by which ore or water are removed See SHAFT, DRIFT, TUNNEL