Science Fair Project Encyclopedia
A quarry is a type of open-pit mine from which rock or minerals are extracted. Quarries are generally used for extracting building materials, such as dimension stone . Quarries are usually shallower than other types of open-pit mines.
Sixty feet below sea level
Conway, South Carolina
Quarries in level areas often have special engineering problems for drainage. The coquina quarry at the right is excavated to more than sixty feet (18 meters) below sea level. To reduce surface leakage a moat, lined with clay, was contructed around the entire quarry. Ground water that seeps into the pit is pumped up into the moat.
Types of rock extracted from quarries include:
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