Relative to the waste rock dump of underground mining, open-pit mining needs a larger one.
相对于地下开采的废石场，露天开采的排土场占地面积要大得多。
The open pit areas are surrounded by an array of sculpted tailings ponds and mine dump areas; these receive mine waste rock for storage and later leaching for further recovery of metals.
露天矿坑周围是一些开挖尾料的堆弃池和废矿垃圾场。储存在这些地方的废弃矿石，稍后经过过滤可以深入提取其中的金属。
In the waste dump, the Abstract is linked with the winch working Laoqin drivers turn waste rock.
在矸石山下，摘挂工老秦正配合着绞车司机在翻矸石。
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