杨和清(包头市青山区卫生防疫站)报道:在历年矽肺普查的基础上,对某建材型砂厂从事石英建材型砂生产加工的155名粉尘作业工人进行了矽肺发病情况调查,并对作业场所的粉尘浓度进行了测定。其结果(1)该厂于1966年1月投产,生产以 Yang Heqing (Qingshan District Health and Anti-Epidemic Station, Baotou City) reports: Based on the silicosis survey over the years, a survey was conducted on 155 dust workers who engaged in the production and processing of quartz building sand for a building material sand factory. The concentration was determined. The result (1) The plant was put into operation in January 1966 to produce