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高踞不下的生产成本不仅迫使欧洲的矿山企业采取广泛的机械化措施．下面以摩洛哥的哈贾尔金属矿山为例，介绍如何用同一型别的欢活塞调料系来输送完全不同的一些介质．文章的第一部分介绍了选矿废石和矿泥的井下回填。第二部分则阐述了在垂直高差达435m的条件下将水仓中的积淤物系送至地表的工作以及为何不采用离心系的理由．
High production costs not only force European mining companies to adopt extensive mechanization measures. Take the Hajar Metal Mine in Morocco as an example to show how different types of media can be delivered using the same type of saucepans. The first part of the article describes the underground backfilling of beneficiation waste rock and slime. The second part explains the reason why the sediment silt system in the water silo is brought to the surface under the vertical elevation difference of 435m and why the centrifugal system is not used.