Advanced slot stress control method of underground excavation
Anchoring apparatus for anchoring a mining installation
Apparatus for and a method of constructing a tunnel
Apparatus for cutting erosive materials using high pressure wate
Apparatus for, and a method of, driving tunnels
Borehole aerostatic ground support system
Canopy and shield structure for supporting a shield in a seam-li
Chimney demolition device and method
Coal cutter vehicle
Construction of underground tunnels and rock chambers
Continuous shoring machines for tunnel construction
Continuous tunnel boring machine and method
Device for closing off a mine gallery especially for use to prev
Dividing cutting machine
Double slot wire sawing apparatus and method
Dust control in longwall mining
Formation of load-bearing foundations by laser-beam irradiation
High pressure water jet channeling horizontally into a solid mou
Inflatable envelope systems for use in excavations
Inflatable envelope systems for use in excavations