490 CONTENTS: 1.Environmental and Sustainable Development Reasons for Going Underground 2.History of Subsurface Development 3.Planning the use of the Subsurface 4.Designs in Underground Engineering 5.Underground Constructions 6.Underground Project Management 7.Operation System in Underground Engineering 8.Disasters Protection in Underground Engineering CONTENTS： 1. Environmental and Sustainable Development Reasons for Going Underground 2. History of Subsurface Development 3. Planning the use of the Subsurface 4. Designs in Underground Engineering 5. Underground Constructions 6. Underground Project Management 7. Operation System in Underground Engineering 8. Disasters & Protection in Underground Engineering