Mining Quarrying Techniques
quarry is a kind of open-pit mine from which rock or minerals
are extracted. Quarries are normally utilized for extracting building
materials, like dimension stone. Quarries are normally shallower
than other kinds of open-pit mines. Quarries are also at times
used as filming locations.
other words a quarry is a big man-made hole in the ground from
where minerals or rock are taken out. Quarries are made when big
deposits of commercially helpful minerals or rock are found close
to the Earth's surface. Quarrying is a type of mining and is also
called as open pit mining or strip mining. When minerals are found
profound beneath the surface, a deep mine has to be dug to dig
out them. Quarries are normally dug deeper and bigger; awaiting
the mineral resource is worn out. When they are no longer used,
quarries are frequently utilized as landfill sites for the disposal
in level areas frequently have particular engineering problems
for drainage. The Coquina Quarry is excavated to more than 60
feet (18 m) beneath sea level. To lessen surface leakage, a moat
lined with clay was constructed round the complete quarry. Ground
water that leaks into the pit is pumped up into the moat.
quarries fill with water after desertion and turn into lakes.
Further quarries are made into landfills.
of rock extracted from quarries comprise:
• China Clay
• Construction aggregate (sand and gravel)
• Globigerina Limestone (Malta)
• Phosphate rock