What is open cast mining?

Answer

Open cast mining is a type of surface mining in which mineral resources are removed from the earth through large holes or pits dug into the surface. The term "open cast mining" is used most commonly in Great Britain.

In the United States, open cast mining is usually called open-pit or open-cut mining. According to the Berkeley Laboratory for Automation Science and Engineering, open cast mines are designed before a mining operation begins. Engineers divide the area to be mined into large cubes, which are excavated one at a time until the entire mining project is completed. The blocks are mined in a predetermined order to maximize profits and minimize environmental impacts.

Q&A Related to "What is open cast mining?"
Open pit mining is a method of extracting rock and minerals from the ground. There is no tunneling method used. The open pit method is used when there are mineral and rocks close
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what are the disadvantages of open cast mining?
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Open cast mining ,means extracting minerals from shallow, near-surface deposits. It is widely used for the metal ores of iron, aluminium, nickel, copper and so on. A lot of coal is
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People working in open pit mines are in danger of falling from a "bench, or ledge cut from the rock, while excavating. Such a fall onto a lower ledge or worse-deep into the pit
http://www.ehow.com/list_6154770_hazards-associate...
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