福建省宁德地区某乡镇个体企业发现4例由石英粉尘作业引起的矽肺,现报告如下。1　现场劳动卫生学调查该乡镇某地5年前开采一处石英矿,当地利用石英矿上残料开办石英粉末加工厂,生产工艺流程为:石英原料经粉碎、球磨、过筛后成石英粉末。该厂均为简易厂房,无任何防尘设施,采用干 Ningde, Fujian Province, a township enterprises found 4 cases of quartz dust caused by silicosis, are as follows. A survey of on-site labor hygiene 5 years ago, the township mining a quartz mine 5 years ago, the local exploitation of quartz mine residue on the quartz powder processing plant, the production process is: quartz raw materials crushed, ball mill, sieved into quartz powder . The plant are simple plant, without any dust-proof facilities, using dry