陈远国(四川省金河磷矿职工医院)报道:为了探索磷矿工人矽肺发病规律,评价近年来的防尘效果,特对建矿以来的矽肺发病情况进行了调查。结果:(1)作业场所粉尘年平均浓度为1.0～6.0mg/m~3;游离SiO_2含量为4.5～46%;分散度在2μm以下者占75～92%,2～5μm者占5～15%,5μm以上者为3～10%。(2)该矿共有接尘工人 Chen Yuanguo (Sichuan Province Jinhe Phosphate Workers Hospital) reported: In order to explore the regularity of phosphorus miners silicosis, evaluate the effect of dust in recent years, especially the incidence of silicosis since the construction of the mine were investigated. Results: (1) The annual average dust concentration in the workplace was 1.0-6.0 mg / m 3; the content of free SiO 2 was 4.5-46%; the dispersity was less than 2 μm, accounting for 75-92%; the proportion of 2-5 μm was 5-15 %, 5% or more are 3 to 10%. (2) The mine has a total dust workers