open pit mining advantages disadvantages. open pit mining open pit mining, also known as opencast mining, open cut mining, and strip mining, means a process of digging out rock or minerals from the earth by
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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 tunneling into the earth, such as long wall mining.
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