解放前,北京市玻璃制造或石英磨粉行业很少,仅有少数私人资本的小作坊,作业环境恶劣,工人劳动条件很差,车间内粉尘浓度高,没有任何防护设备,有些工人工作不到3年即患矽肺病死亡。例如在宣武区的某石英磨粉厂,车间总面积不到10平方米,工人回忆说,车间粉尘很多,“伸手不见掌”。公私合营后,各玻璃制造厂逐渐扩大了 Before the liberation, there were few glass manufacturing or quartz milling industries in Beijing. There were only a handful of small workshops with private capital. The working environment was harsh, the working conditions of workers were poor, the dust concentration in the workshop was high, there was no protective equipment and some workers did not work 3 years died of silicosis. For example, a quartz mill in Xuanwu District, the total area of ​​less than 10 square meters, workers recalled that the workshop a lot of dust, “out of hand.” After the public-private partnership, the glass factories gradually expanded