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关于粉尘量和矽肺发病关系的研究,国内外已有不少报道,但在观察指标和研究方法上尚有些争议。为做进一步探讨,我们对本省盖县九寨硅矿进行了卫生学调查,现将情况做一简介并提出一点看法。 1956年以来,九寨硅石矿一直以当地所产石英石为原料,生产各种规格的石英砂,粉尘中游离二氧化矽的含量为85～95％。多年来,在全面调查的基础上,该矿已建立了定期健检制度,接尘工人每年拍胸片1～2张,并设立了详细的个人健康卡片。每当改进防尘措施或作业条件
There has been a lot of reports on the relationship between the amount of dust and the incidence of silicosis at home and abroad, but there are still some controversies on the observation indexes and research methods. In order to further explore, we conducted a hygiene survey of the Jiuzhaisi deposit in Gaxian County, Gansu Province. We will briefly introduce the situation and make some observations. Since 1956, Jiuzhai Silica Mine has been producing quartz sand of various specifications from locally produced quartzite. The content of free silica in the dust is 85-95%. Over the years, on the basis of a comprehensive survey, the mine has established a regular health inspection system. Workers who take dust collect 1 to 2 chest radiographs annually and set up detailed personal health cards. Whenever possible to improve dust control measures or working conditions