Subscribe for full online access and get...
- Full, instant access to all stories
- Customised email alerts straight to your inbox
- Monthly print magazine
For the best possible experience using our website we recommend you upgrade to a newer version or another browser.
US trenching and trenchless technology equipment manufacturer Vermeer has developed a pneumatic rock drilling system for use with its Navigator directional drilling systems. The Rockfire hammer and air compressor can be used to drill steerable 150mm diameter bores in solid rock for short to medium distance drives, says the company. An essential component is claimed to be an environmentally friendly polymer foaming agent developed by Baroid, which carries rock spoil out of the bore path.