... coal mining 采煤; 采煤 Nantong coal mining area of Chongqing 南桐矿区; 南桐矿区 waste rock (in coal mining) 煤矸石 ...
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waste rock pile 矸石堆
coal waste rock pile 煤矸石堆
waste rock from uranium mine 铀矿山废石
waste-rock yard 废石场
Waste rock waste sand 废石废砂处理
waste rock loss 弃矸流失
waste rock site 废石场
waste rock hill 矸石山
waste rock dump 矸石山
The miners muck the waste rock every other day.
矿工每隔一天清除一次矸石。
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。
The discharge system for the belt conveyance of the waste rock in the mine well solves these problems.
矿内输送带运输矸石排放系统有效地解决了这些难题。
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