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what type of mining are used to remove silver from the earth

There are four mainminingmethods: underground, open surface (pit), placer, and in-situmining. Underground mines are more expensive and are oftenusedto reach deeper deposits. Surface mines are typicallyusedfor more shallow and less valuable deposits. Placerminingisusedto sift out valuable metals from sediments in river channels, beach sands, or other environments

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