| 1. | Connecting survey of the deepening of blind service shaft
盲副井延深的贯通测量 |
| 2. | Talking about dahebian coal mine developing plan for level
标高开拓延深方案 |
| 3. | New way of deepening skip loading chamber construction in shaft
立井延深箕斗装载硐室施工新途径 |
| 4. | The new development of extending a deep in the exploitation of coal mine
煤矿开拓延深方式的新发展 |
| 5. | Discussion on fourth horizontal extending project of fenghai coalmine , fujian
福建丰海煤矿第四水平延深工程探讨 |
| 6. | Practice on probe drilling water of working face goaf in deepening coal pillar
延深煤柱工作面采空区探放水的实践 |
| 7. | 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 |
| 8. | Analysis on enlargement and extension design of no . 1 winning district in naluozhai coal mine
那罗寨煤矿一采扩大采区延深设计分析 |
| 9. | Construction technology of overhead crossing point in deepening work of staple inclined shaft
暗斜井延深工程立面交岔点的施工工艺 |
