摘要
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。
The paper introduces the experience and knowledge of the application of respiratory dust monitor and classification of its harm level spreaded by the Ministry of Labour. The paper also put forward some suggestions on the revision of classification standard and the application of monitor result.
