Method and system for mining hydrocarbon-containing materials

Method and tie bar for formation of anchorages

Method for anchoring a bolt in a rock-like structure

Method for building large span tunnels by means of a...

Method for drilling rock

Method for dry spraying calcium sulfate hemi-hydrate

Method for embedding rock anchors

Method for establishing an anchor in the ground or the like...

Method for fixing a cable or tendon

Method for inserting metal cables into holes drilled in the...

Method for installing rock bolts

Method for introducing a vertical shaft and shaft driving...

Method for preparing in-ground tunnel structures

Method for producing hollow structures and hollow structures

Method for production of a mining metal plug

Method for reducing frictional losses in tunnels

Method for removing resilient gallery lining frames

Method for rock bolting by using a stranded cable and...

Method for sealing mine workings

Method for tunnel lining