A drift mine is a type of underground mine. Were a tunnel OS dug at the side of a hill
The horizontal entrance is called a portal. If there are two portals, then you call the excavation a tunnel. If there is only one, it is call a drift or adit.
Continental Drift
A glacial drift deposits and carries away glaciers
Because Continental drift is when the continents drift apart because they hate each other.
glacial drift is the rock material carried and deposited by glaciers!
Ghost Mine - 2013 Shadows in the Drift 2-11 was released on: USA: November 2013
Drift mines are characterized by the use of a level tunnel leading into the mine, while slope mines have an inclined tunnel, and shaft mines utilize a vertical tunnel
If the coal mine was deep (not a drift mine) it would register higher pressure due to the extra weight or air above it.
This is known as drift mining. The horizontal opening is known as an adit.
Drift mining is the type of mining defined by the horizontal opening, or adit, in a mountain. This is the stereotypical mining found in most media, and is in contrast to quarry mining, mining in open surfaces, or strip mining, where all the materials are taken and then filtered.
An adit. In North America, the horizontal or sloped entrance to a mine is called a "Portal". Portal more specifically refers to the portion of the shaft visible from the outside of the mine. In some areas, the Portal portion of a horizontal shaft is called the "Drift Mouth" or "Drift Portal" as this shaft leads into a "Drift Mine". With a vertical shaft, that portion would be called a "Collar".
Genetic drift
The horizontal entrance is called a portal. If there are two portals, then you call the excavation a tunnel. If there is only one, it is call a drift or adit.
of Head, The act or state of one who, or that which, heads; formation of a head., That which stands at the head; title; as, the heading of a paper., Material for the heads of casks, barrels, etc., A gallery, drift, or adit in a mine; also, the end of a drift or gallery; the vein above a drift., The extension of a line ruffling above the line of stitch., That end of a stone or brick which is presented outward.
causes of magnetic drift causes of magnetic drift causes of magnetic drift
is he a drift man ? are they just drift into the class
Continental Drift