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 blocking gas flow in a coal seam

Method for breaking concrete structures

Method for breaking rock by directing high velocity jet into pre

Method for closing off a mine gallery especially for use to prev

Method for completing a well in a coal formation

Method for controlled fragmentation of hard rock and concrete by

Method for controlling stress and increasing the strength of sup

Method for cutting minerals and cutting machine

Method for depositing dust during hydraulicking of minerals by a

Method for developing thick beds of minerals

Method for dewatering a subterranean formation via a borehole

Method for dredging rock with a pick and water jet combination

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 a barrier

Method for forming an in situ oil shale retort