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介绍由劳动部推行的矿山呼吸性粉尘监测及危害程度分级方法在露天矿山应用的经验和体会，并对分级标准的修改和监测结果的应用提出了建议。
This paper introduces the experience and experience of mine respirable dust monitoring and hazard classification applied by the Ministry of Labor in the open pit mine and puts forward some suggestions on the revision of grading standards and the application of monitoring results.