本文报告1974～1977年对我区二个省属中型煤矿和四个县办小煤矿1722人普查矽肺,检出各期煤矽肺115例,总检出率为6.67%。其中省属中型煤矿1246人,检出各期煤矽肺68人,其检出率为5.5%。县办煤矿476人检出各期煤矽肺46人,其检出率为9.7%。本文选出资料较全,符合照片质量的各期 This paper reports from 1974 to 1977 on the two provinces in our province is a medium-sized coal mines and four county-level coal mines in 1722 survey of silicosis, detected 115 cases of coal silicosis, the total detection rate was 6.67%. Among them, 1246 medium-sized coal mines of provincial level detected 68 coal silicosis patients of various periods, with a detection rate of 5.5%. Forty-six coal-mine counties in the county detected 46 coal silicosis patients of various phases, with a detection rate of 9.7%. This selection of more complete information, consistent with the quality of the photo period