A clay pit is an open mine for the extraction of clay, which is generally used for manufacturing bricks.
The brick factory is often located alongside the clay pit to reduce the transport costs of the raw material.
Former claypits are sometimes filled with water and used for recreational purposes such as sailing and scuba diving.
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Clay is a generic term for an aggregate of hydrous silicate particles less than 4 μm (micrometres) in diameter. Clay consists of a variety of phyllosilicate minerals rich in silicon and aluminium oxides and hydroxides which include variable amounts of structural water. Clays are generally formed by the chemical weathering of silicate-bearing rocks by carbonic acid, but some are formed by hydrothermal activity. Clays are distinguished from other small parti ...
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.
People in some English-speaking countries are unlikely to make the distinction between this type of mine and any other type of open-pit or open-cast borrow or gravel pit mining operation.
Quarries in level areas often have special engineering problems for drainage. The coquina quarry at the ...
Clays are heavy in texture yet soft to the touch. Clay is a malleable substance when wet, which means it can be shaped easily with the hands. When dry, it becomes firm and when "fired," or hardened by intense heat, clay becomes permanently solid. A fireplace specifically designed for hardening clay is called a kiln. These properties make clay an ideal subtance for making pottery, stoneware and various other practical items. Early humans discovered the useful properties of clay in prehistoric times, and one of the earliest artifacts ever unco ...
Clays are heavy in texture yet soft to the touch. Clay is a malleable substance when wet, which means it can be shaped easily with the hands. When dry, it becomes firm and when "fired," or hardened by intense heat, clay becomes permanently solid. A fireplace or oven specifically designed for hardening clay is called a kiln. These properties make clay an ideal substance for making durable pottery items, both practical and decorative, with different types of clay and firing conditions giving earthenware, stoneware and porcelain. Early humans d ...
