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石膏有冰石膏和硬石膏两大类,目前主要用作水泥的缓凝剂原料和化学肥料以及制模型等。随着社会主义建设事业的发展,石膏的用途日益广泛,作业人数相应逐年增加,搞好石膏矿的尘肺病防治是很必要的。我们观察了湖南某石膏矿工人一九六六年以来(八年)的胸部X线动态表现,对全矿粉尘作业职工(包括尘肺病退休职工)进行了普查,现将情况报告如下。概况某石膏矿是个小型矿山,主要生产青石膏及少量的红石膏和白石膏。围岩为红色砂
Gypsum are two types of ice gypsum and anhydrite, mainly used as cement retarder raw materials and chemical fertilizers and system models. With the development of socialist construction, the use of gypsum is increasingly widespread and the number of workers correspondingly increases year by year. It is necessary to do a good job in the prevention and control of pneumoconiosis in gypsum mines. We observed the chest X-ray dynamic performance of a gypsum miners in Hunan Province (1986) since 1966 and conducted a general survey on the dust mine workers (including retired workers with pneumoconiosis) in the whole mine. The situation is reported as follows. Overview A gypsum mine is a small mine, the main production of green gypsum and a small amount of red gypsum and white gypsum. Surrounding rock is red sand