Barrel for rock breaking tool and method of use

Blasting positioning device

Cartridge for generating high-pressure gases in a drill hole

Coal extraction in a longwall working

Combustion apparatus for generating repetitive explosions

Controlled fracture method and apparatus for breaking hard compa

Dressing a rock face for abandonment

Drillhole blasting

Explosive fluid transmitted shock method for mining deeply burie

Fragmentation of an underground ore body

Horizontal free face blasting for minimizing channeling and moun

Longwall mining with blasting

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