Open-pit open-cast or open cut mining is a surface mining technique of extracting rock or minerals from the earth by their removal from an open pit or borrow This form of mining differs from extractive methods that require tunnelling into the earth such as long wall mining Open-pit mines are used when deposits of commercially useful ore or rocks are found near the surface advantages and disadvantages of lignite in Advantages and Disadvantages of Gold Mining in South Africa (Mt) of hard coal are currently produced worldwide and 810 5 Mt of brown coal/lignite what are the disadvantages of coal alborada What are the disadvantages of Coal Tar Epoxy in use as a protective coating for concrete structures in There are many advantages and disadvantages

Opencast Mining (Quarrying): Methods Advantages

Opencast mining or quarrying of minerals is easier than mining by underground methods During quarrying the alluvium and rocks below which the minerals lie are removed and dumped in the initial stages in a place which is not required in future for quarrying residential or other purposes

Open pit mining is also called strip mining because the extraction process destroys vegetation reduces habitats and pollutes the environment Mining proponents argue that the process is more efficient cost effective and safer than shaft mining Environmental regulations help

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Open Cast Mining For Metal Ores Disadvantages

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Open Pit Mining Disadvantages

4 Disadvantages of open pit mining However disadvantages when compared to Underground Mining also exist: Very large amounts of waste rock are mined This creates costs as well as environmental issues with waste rock disposal Major disruption of surface: pit footprint waste dumps High visual impact especially strip mining

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open cast mining advantages and disadvantages - ugcnetnicin Open Cast Mining Disadvantages Open Pit Mining Pros Cons eHow Open Pit Mining Pros Cons Open pit mining -- or strip mining -- is an extraction process for ore or fossil fuels that takes place at the surface of a mining site advantage and disadvantage of open cast mining

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