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本文对美国矿业局1986年以来所开展的研究、研制项目──“减少危害的采矿系统”（REMS）的进展情况做了全面介绍。
This article provides a comprehensive overview of the progress made by the US Department of Mines in research and development programs since 1986, the “Harm Reduction Mining System” (REMS).