Method and a machine for advancing an underground face of a geol
Method and apparatus for reclamation by reducing highwalls to gr
Method and apparatus removing a mineable product from an undergr
Method apparatus and cartridge for non-explosive rock fragmentat
Method apparatus and cartridge for non-explosive rock fragmentat
Method for blasting tunnels using an air bladder
Method for completing a well in a coal formation
Method for controlled fragmentation of hard rock and concrete by
Method for excavating a tunnel rock face by drilling a...
Method for excavating a working face by blasting
Method for explosive breaking of hard compact material
Method for forming an in situ oil shale retort
Method for producing chambered blast holes
Method for reclaiming highwalls at mining sites with partially m
Method for removing hard rock and concrete by the combination us
Method of and a device for carrying out wire bolting
Method of and apparatus for breaking rock
Method of and apparatus for breaking rock
Method of blasting rock caverns with large cross-sectional area
Method of breaking a full face of rock for constructing shafts a