The HRB® bolt is a hollow steel bolt used in resin or grout installations, typically in hard rock mines where larger diameter support holes are drilled.
Mining-specific rebar has been developed to improve on the performance of conventional rebar in mine rock reinforcement applications.
Rock bolts / studs are mechanically point anchored within the rock using 3 leaf bail-type expansion shells attached to the inserted end of the bolt.
Rock bolt assemblies for resin anchoring (chemical anchoring) comprise the stud, nut, bearing plate washer and a selection of accessories and modifications which can be configured to suit particular installation and rock support requirements.
The Friction Anchors can be installed with either hand held or mechanised equipment (Jumbos, Roof bolters, etc.) to provide an immediate frictional rock support at the face.
Pigtail Eye Bolts are used mainly to suspend underground services such as pipes and conduits.
Flexible eyebolts are used mainly to rig underground snatch blocks and pulleys.
Shepherd’s Crooks are used as a primary or secondary support and may be used in conjunction with meshing and lacing where required.