From ground level to projects above water and at height, Griffiths have installed bolts on railway, highway, coastal, residential and commercial sites.

Griffiths use soil nail systems (often combined with a steel mesh or spray concrete finish) to stabilise slopes or open cuts for both new and old infrastructure.

• Mechanical installation – Rock bolts installed by mechanical means either attached to plant or a steel wheeled frame / sledge.
• Long reach capability – drills can be mounted to long reach excavators, telehandlers and cranes. AG have undertaken a project where a 38m reach was needed.
• Drilling Equipment – Ripamonti top hammer hydraulic drills with draw stroke of between 1 and 4m length.
• Diameter and length – generally from 76mm to 220mm diameter and up to 20m length. Mechanical anchors with duckbill heads.
• Variety of materials – Usually hollow core bars but this can vary. Mechanical anchors with solid bar or cable fixings. Hexagonal and diamond meshes, reinforced steel meshes and spray concrete.
• Grouting – Simultaneous drill and grout technique.
• Testing  – In house capability to undertake a variety of pull tests and produce test reports with analysis.