| 1. | Connecting survey of the deepening of blind service shaft
盲副井延深的贯通测量 |
| 2. | The plan of the auxiliary shaft strenching engineering during operation
矿井生产期间副井延伸工程方案 |
| 3. | Improvements of brake - clearance protector for main and auxiliary shafts winder
主副井绞车闸间隙保护装置的改进 |
| 4. | The construction in special thick clay layer in qidong coal mine auxiliary shaft
祁东矿副井井简过特厚粘土层施工 |
| 5. | Design on signal circuit for hoist in auxiliary mine shaft base on plc technology
技术的一种副井提升机信号电路设计 |
| 6. | Practices on rapid construction in freezing section of auxiliary shaft in suntong mine
孙疃煤矿副井冻结段快速施工实践 |
| 7. | Reasons and reinforced handle for subsidiary - well wall crack of xinyi coal mine
新义煤矿副井井壁破裂原因分析及加固处理 |
| 8. | Transformation of hoist braking system in yugong auxiliary shaft of no . 3 yangquan mine
阳泉三矿裕公井副井提升机制动系统的改造 |
| 9. | Preliminary analysis of shaft deepening through survey of auxiliary shaft at renlou coal mine
任楼煤矿副井井筒延深贯通测量浅析 |
| 10. | Back grouting and water sealing technology for mine auxiliary shaft lining in shoushan no . 1 mine
首山一矿副井井筒壁后注浆堵水技术 |
