Recycling Waste From Natural Stone Processing Plants
A quarry is a place where rocks, sand, or minerals are extracted from the surface of the Earth. A quarry is a type of mine called an open pit mine, because it is open to the Earth's surface.Another type of mine, a sub surface mine, consists of underground tunnels or shafts The most common purpose of quarries is to extract stone for building materials.Jan 15, 2002 Mine dumps, tailing piles and unmined mineral “Hardrock minerals” refer to “locatable” materials in rock, such as metals, uranium and uncommon varieties of sand, stone and gravel claimed and developed under the General Mining Law of 1872. But not all mining is hardrock. Coal, oil, gas phosphate, potash, sodium, sulphur and other.