rock spoil removal
... spoil reclaiming矸石堆复田 rock spoil removal清除矸石 spoil heap incline废石堆斜面 ...
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矿工每隔一天清除一次矸石。
The miners muck the waste rock every other day.
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矸石每天要清除一次。
The waste rocks are mucked out every day.
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