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报道:为了摸清铁矿接尘工人尘肺患病情况及分布规律,对某铁矿1986年底以前确诊的尘肺病人及其作业环境粉尘浓度进行了回顾性调查分析。结果:1967~1986年间作业场所空气中粉尘浓度为0.1~418.3mg/m~3(共采集粉尘样品14538个),平均为6.37mg/m~3。粉尘中游离SiO_2含量为5.1~9.3%。1963~1986年共确诊尘肺病人240名,累计患病率为9.02%。其中Ⅰ期136名,占病人总数的56.67%;
Reported: In order to find out the situation and distribution of pneumoconiosis workers in dust mines, a retrospective investigation was made on the dust concentrations of pneumoconiosis patients and their operating environment that were confirmed before the end of 1986 by an iron mine. Results: The airborne dust concentration in the workplace from 1967 to 1986 was 0.1 ~ 418.3 mg / m ~ 3 (a total of 14538 dust samples were collected) with an average of 6.37 mg / m ~ 3. The content of free SiO_2 in dust is 5.1 ~ 9.3%. A total of 240 pneumoconiosis patients were diagnosed between 1963 and 1986, with a cumulative prevalence rate of 9.02%. Among them, 136 were stage Ⅰ, accounting for 56.67% of the total number of patients.