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Explain mining, drilling and querying.
Answers
Answer:
QUARRYING :- A quarry is a place from which dimension stone, rock, construction aggregate, riprap, sand, gravel, or slate has been excavated from the ground. A quarry is the same thing as an open-pit mine from which minerals are extracted. The only trivial difference between the two is that open-pit mines that produce building materials and dimension stone are commonly referred to as quarries.
examples :- Types of rock extracted from quarries include:
Chalk
China clay
Cinder
Clay
Coal
Construction aggregate (sand and gravel)
Coquina
Diabase
Gabbro
Granite
Gritstone
Gypsum
Limestone
Marble
Ores
Phosphate rock
Sandstone
Slate
DRILLING :-
Drilling is a cutting process that uses a drill bit to cut a hole of circular cross-section in solid materials. The drill bit is usually a rotarycutting tool, often multipoint. The bit is pressed against the workpiece and rotated at rates from hundreds to thousands of revolutions per minute. This forces the cutting edge against the workpiece, cutting off chips (swarf) from the hole as it is drilled.
In rock drilling, the hole is usually not made through a circular cutting motion, though the bit is usually rotated. Instead, the hole is usually made by hammering a drill bit into the hole with quickly repeated short movements. The hammering action can be performed from outside of the hole (top-hammer drill) or within the hole (down-the-hole drill, DTH). Drills used for horizontal drilling are called drifter drills.
In rare cases, specially-shaped bits are used to cut holes of non-circular cross-section; a square cross-section is possible.[1]
Explanation:
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Explanation:
Mining -
the process or industry of obtaining coal or other minerals from a mine.
Drilling-
the action of making a hole in something by boring with a drill.
Quarrying -
Quarrying is the process of removing rock, sand, gravel or other minerals from the ground in order to use them to produce materials for construction or other uses. So, a quarry is any such working on the surface of the earth where minerals are extracted.