This may be because open-pit mining is only one type of mining in which the soil and rock covering the material to be mined are removed. Together, those types of mines are called surface mines.

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Surface mining includes strip mining and open pit mining. Strip mining is more commonly used for coal and silver deposits, while pit mining is used for gravel mining, like those in the Washougal ...

Lundin Mining (TSX:LUN,OTC Pink:LUNMF ... “The initial mineral resource has highlighted the potential for one of the highest grade undeveloped open pit copper projects in the world and one of the ...

Special zoning that allows surface mining in the Chelatchie Bluff area will stay in effect, at least for now. On Tuesday, the Clark County Council voted 3-2 against repealing the ordinance that ...