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矿属有色中型矿山,矿脉中游离SiO_2含量占67～70％。分散度5μm以下者占83～90％。31年间共发病1521例,死亡749例,病死率占49.2％。矽肺结核合并率54.8％,矽肺结核死亡率81.4％。1958年后接尘工人发病人数69例,其中死亡3例。死亡年龄:各年代之间差异显著(F=159.68,P<0.01)80年代较50年代延长20.3岁。各时期病程逐年延长(F=166.88,P<0.01)。累积存活率:确诊10年时为62.4％,20年时为39.5％,30年时为21.9％。
The mine is a non-ferrous medium-sized mine, with the content of free SiO_2 in the veins accounting for 67-70%. Dispersion of 5μm or less accounted for 83 to 90%. A total of 1521 cases were found in 31 years, with 749 deaths and the mortality rate was 49.2%. The rate of silicosis was 54.8%, and that of silicosis was 81.4%. In 1958, the number of workers who received dust was 69, of which 3 were fatal. Age of death: Significant difference between the years (F = 159.68, P <0.01) The 1980s was 20.3 years longer than in the 1950s. The duration of each period was prolonged year by year (F = 166.88, P <0.01). Cumulative survival rates were 62.4% at 10 years of diagnosis, 39.5% at 20 years and 21.9% at 30 years.