2Safety Mine Shaft Construction Technology for Gypsum Mine under Complicated Geological Conditions6-8
3Practices on Operation of Grouting and Sealing in High Pressurized and High Volume Water at Mine Shaft Working Face9-12
5Application of Working Face Pre - Grouting Technology to Auxiliary Mine Shaft Sinking of Laogongyingzi Mine16-17
8Steel Sticky Strength of Reinforced Concrete Axial Pressurized Column Determined with Coefficients24-26
10Discussion on Support Technology of Deep Mine Rock Roadway in No.9 Mine of Hebi Coal Mining Group30-31,41