近代的中国煤矿,中外资本家为更多地榨取工。人血汗,往往采取延长劳动时间和增加劳动强度的手段。如开滦、中福(焦作)、阳泉、大同、华东(贾汪)、烈山等煤矿,名义上是三班交换制,每班工作八小时,但因工资过少不能维持生活,工人常要打连班,每天劳动十六个小时。其他如萍乡、井陉、门头沟、淄川、坊子等煤矿,则实行阴阳班,采取每天昼夜两班 In the modern Chinese coal mines, Chinese and foreign capitalists squeezed more workers. Persons sweat, often to extend the working hours and increase labor intensity means. Coal mines such as Kailuan, Zhongfu (Jiaozuo), Yangquan, Datong, East China (Jiawang), Lieshan and so on are nominally a three-shift system with eight hours of work per shift but can not sustain their livelihood due to too little pay To run after class, working sixteen hours a day. Others such as Pingxiang, Jingxing, Mentougou, Zichuan, Fangzi and other coal mines, the implementation of yin and yang classes, to take day and night two classes