Concrete lining of drilled shaft

Concrete repair of tubbings

Connecting device for connecting concrete segments

Consolidation of rock strata

Constant-pressure air-storage cavern with hydraulic pressure...

Constitution des charges de scellement

Construction fastener assembly

Construction preform structure for tunnel walls

Continuous boring machine

Continuous boring or cutting machine

Continuous method of realisation of works underground,...

Continuous roof support system for tunnel boring

Continuously operable underground mining vehicle

Control method and control equipment for drilling apparatus

Control of the actuation of hydraulic consumers

Control systems for self-advancing mine roof supports

Controlled expansion of rock bolt

Corrosion protected tensioning member for a prestressable...

Corrosion-protected, self-drilling anchor and anchor subunit...

Cribbing