mine filling
... 矿产资本 Mineral resources 矿山回填 Mine filling 军事勾当 Military activity ...
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对于在生产、规模较大的露天采场，不能采用削坡回填、覆土种植等简单的传统方法恢复矿山生态环境。
However, in large open pits, traditional methods such as planting, slope cutting and backfilling are not suitable for restoring the ecological environment.
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