Drift mining is a process of accessing precious geological material, like coal, by cutting into the side of the earth, rather than tunneling directly downwards. Drift mines have flat entries into the coal seam from a hillside. Drift mines are different from slope mines, which have a tending opening from the surface to the coal vein. If likely, while, drifts are driven at just a slight predispose so that removal of material may be helped out by gravity.
Drift mining is used to access a range of minerals like gold, coal, quartz, and zinc. It poses high economical means of recovery than other more invasive types of underground mining that entail digging up through rock. Sub-horizontal and horizontal tunnels excavated the side of a mountain or hill, given the common name of a drift, are normally driven at an incline or just beneath the vein so that gravity may better assist in the carrying of material out of the mine. Once tunnels are driven, they may be utilized for haulage, ventilation, and exploration of further possible mineral or coal seams. Material is normally mined and taken out using longwall mining or room and pillar mining methods and nonstop mining equipment. Drift mines are a general type of mine all through the eastern U.S.
In other words Drift mines are a type of underground mining.This type of mining is performed when the rock or mineral is on the side of a mountain. This makes it simple, economic way to mine. The opening to the mine will be dug slightly lower than a rock or mineral vein whenever possible. This in turn makes simpler to get materials out as the gravity helps move them down hill. The tunnels that are excavated are horizontal and are known as drifts.
This mining process was in fact risky in earlier days. Several tunnels caved in trapping and slaughtering miners. Ore was the material which was frequently mined in this manner. It's a rock with minerals in it. In early period miners threw away the silver, copper, and further minerals that they discovered along with gold that they were looking for. Miners were annoyed when they had to separate those things from the gold they were looking for. Well later these minerals became very precious, too.