Machine for and method of hardening soft ground

Machine for and method of hardening soft ground in depths

Machine for paving a canal bottom

Mechanical expansion anchor shell

Metal mesh sleeve for dowel assembly

Method and a device for feeding concrete into a drill hole in th

Method and an apparatus for providing a grouted anchorage agains

Method and apparatus for affixing a roof bolting plate to a mine

Method and apparatus for anchoring rock bolts and cables

Method and apparatus for anchoring roof bolts

Method and apparatus for building below ground slurry walls

Method and apparatus for combining resin bonding and mechanical

Method and apparatus for combining resin bonding and mechanical

Method and apparatus for constructing an underground barrier...

Method and apparatus for constructing slurry walls

Method and apparatus for constructing subterranean walls compris

Method and apparatus for forming a continuous row of cast-in-pla

Method and apparatus for forming reinforced concrete walls with

Method and apparatus for forming successive overlapping voids in

Method and apparatus for improving the strength of soft viscous