An open mine, especially a coal mine, whose seams or outcrops run close to ground level and are exposed by the removal of topsoil and overburden.
露天矿产，尤指煤矿，它的煤层或露头接近于地表，除去表土和覆盖层即可发现。
An open mine, especially a coal mine, whose seams or outcrops run close to ground level and are exposed by the removal of topsoil and overburden.
露天矿产，尤指煤矿，它的煤层或露头接近于地表，除去表土和覆盖层即可发现。
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