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本文报道铁路工程生产性粉尘作业危害程度的分级，及应用指数法与查表法的对照研究结果。６４个粉尘作业岗位按照ＧＢ５８７７－８６分级标准分级，基本上能正确反映其危害程度总的趋势及其差异；指数法与查表法分级结果有一定差异，其符合率为９２．１９％。
This paper reports the grading of hazardous degree of productive dust work in railway engineering and the result of comparative study using index method and look-up table. 64 dust jobs in accordance with grading standards GB5877-86 grading, basically can correctly reflect the general trend of harm and its differences; index method and the table method grading results have some differences, the coincidence rate was 92.19%.