汶南煤矿是新汶矿业集团进入深部开采的老矿井。
Wennan colliery of Xinwen coal mining Group is an old coalmine and is mining deep coal layer.
介绍了双鸭山矿业集团双阳煤矿反程开采的实践，分析了反程序开采的必要性及可行性，为反程序开采提供了经验数据。
The practice of ascending mining of shuangyang coal mine is introduced, this work have provided a number of substantial evidence.
新汶矿业集团华丰煤矿四层煤分层开采，长期以来全部采用金属菱形网作假顶。
There are four layer coal in Huafeng coal mine of Xinwen coal group company, it is mined layer by layer, artificial roof is used by diamond metal net over a long period of time.
新汶矿业集团华丰煤矿四层煤分层开采，长期以来全部采用金属菱形网作假顶。
There are four layer coal in Huafeng coal mine of Xinwen coal group company, it is mined layer by layer, artificial roof is used by diamond metal net over a long period of time.
应用推荐