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首页> 外文期刊>Occupational and environmental medicine >Risks of silicosis in coalworkers exposed to unusual concentrations of respirable quartz.
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Risks of silicosis in coalworkers exposed to unusual concentrations of respirable quartz.

机译：暴露于异常浓度的可吸入石英中的煤矿工人患矽肺病的风险。

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OBJECTIVES: To describe the radiographic changes in coalworkers exposed to unusual concentrations of respirable quartz during the 1970s, and to relate these to exposure measurements. METHODS: Men who had worked at one Scottish colliery during the 1970s were invited to a health survey. Chest radiographs were taken from 547 subjects. Classifications of these films under the International Labour Organisation (ILO) 1980 scheme were related, by logistic regression, to existing data on individual men's exposures to respirable dust and quartz. RESULTS: Taking the median of the three readers' results on profusion of small opacities, 203 men (38%) showed progression of at least one profusion category on the 12 point scale, from the various 1970s surveys to the follow up in 1990-1. A total of 158 men (29%) had a profusion of at least 1/0, and 47 (8.6%) of at least 2/1 at the follow up survey. Large opacities were recorded as present by at least two readers for 14 (2.6%) of the men. Profusion of small opacities was strongly related to exposures experienced in the 1970s, and more strongly for quartz than for the non-quartz fraction of the dust. Estimates of risk are presented over the range of quartz exposures experienced. CONCLUSIONS: The quartz exposures experienced by some men at this colliery have caused considerable progression of radiographic abnormalities since exposure ended. The data accumulated offer opportunities for further more detailed analyses to inform debate on occupational limits for quartz exposures, both in collieries and in other industries where there is exposure to quartz in mixed dust.
机译：目的：描述1970年代暴露于异常浓度的可吸入石英中的煤矿工人的射线照相变化，并将其与暴露测量联系起来。方法：1970年代曾在一家苏格兰煤矿工作过的男人被邀请参加健康调查。胸部X光片来自547名受试者。通过逻辑回归，根据国际劳工组织（ILO）1980计划对这些电影的分类与有关单个男子暴露于可吸入粉尘和石英的现有数据有关。结果：从1970年代的各种调查到1990-1的随访研究，以三位读者对小混浊的大量研究结果的中位数来看，有203名男性（38％）在12分制上显示至少一种充血类别的进展。 。在随访调查中，共有158名男性（29％）至少有1/0的充盈，而47名女性（8.6％）的至少2/1的充盈。至少有两名读者记录了其中14人（2.6％）的大混浊。小混浊的大量出现与1970年代经历的暴光密切相关，石英比粉尘的非石英部分更强烈。风险评估是在经历的石英暴露范围内提出的。结论：自暴露结束以来，一些男性在该煤矿经历的石英暴露已导致射线照相异常显着发展。所收集的数据为进一步详细分析提供了机会，从而可以为在煤矿和混合粉尘中暴露于石英的其他行业的石英暴露职业限制辩论提供依据。

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