horizontal opening by which a mine is entered or drained
A nearly horizontal passage from the surface by which a mine is entered. A blind horizontal opening into a mountain, with only one entrance.
(2) a horizontal or nearly horizontal passage driven in rock from the surface for the working or dewatering of a mine.
a nearly horizontal passage from the surface in a mine
horizontal or near-horizontal tunnel extending outward from a well or shaft below the water table, designed to increase well productivity passage from the surface by which a mine is entered and drained.
A horizontal tunnel or drive, open to the surface at one end, which is used as an entrance to a mine.
A horizontal entrance to go an underground mine
a nearly horizontal passage from the surface into a mine
a horizontal passage driven from the surface to work a mine or vein
a nearly horizontal tunnel into a mine
A nearly horizontal passage driven from the surface to the mine workings.
a tunnel into the ground that provides access to mineralization for mining or mineral exploration purposes
a horizontal entrance, or passage, in a mine
A horizontal opening giving access to a mine.
It is a term used for common mining of a horizontal to sub-horizontal tunnel driven into a hillside to access an ore body.
A tunnel driven into a hillside to facilitate access, drainage and haulage of ore to the surface from a mine.
A horizontal, or near horizontal passage, driven from the surface for the working of the mine.
A nearly horizontal tunnel for entering a mine from the surface.
A horizontal or inclined entrance into a mine.
an entrance to a mine, and is generally a horizontal tunnel.
A horizontal mine passage usually dug to drain a mine or a mountainside
A horizontal or nearly horizontal entrance to a mine, otherwise known as a tunnel.
An opening driven horizontally into the side of a mountain or hill for providing access to a mineral deposit.
an entrance to a mine, usually a horizontal entrance rather than a vertical one
Horizontal passage to access mineralization, usually in the side of a hill
A tunnel driven usually for the drainage of mine water, or access into a mine from the side of a hill
Horizontal entrance to a mine, slightly inclined to allow drainage. Bab gins Early 18th century water wheel powered pumping engines, used to clear the mines of water.
In underground mining, a horizontal opening driven from the surface which gives access to the ore body and so broken material can easily be removed by gravity. The term "tunnel" is frequently used in place of Daito, but technically, a tunnel is open to the surface at both ends.
An opening driven horizontally into the side of a mountain or hill to provide access to a mineral deposit.
A horizontal passage from the surface into a mine, also called a tunnel.
An adit is a more or less horizontal drive (walk-in mine) into a hill that is usually driven for the purpose of intersecting or mining an ore body. An adit may also be driven into a hill to intersect or connect a shaft for the purpose of dewatering. Adits were commonly driven on a slight incline to enable loaded mine trucks to have the advantage of a downhill run out, while the empty (lighter) truck was pushed uphill back into the hill. The incline also allows water to drain out of the adit. An adit only becomes a tunnel if it comes out again on the hill somewhere, like a train tunnel.
Passageway or doorway. Alternately, a horizontal passage into a mine.
An adit is a type of entrance to an underground mining shaft is horizontal or nearly horizontal. Adits are usually built into the side of a hill or mountain, and often occur when a measure of coal or an ore body is located inside the mountain but above the adjacent valley floor or coastal plain. The use of adits is generally called drift mining.
