British trenchless technology equipment manufacturer Steve Vick International is demonstrating its directional drilling equipment for installing underground pipes, ducts and cables.
Rotamole and Pitmole use percussive hammer action rather than relying on drilling fluids. Pitmole is the latest addition to the range, which can be launched from a pit or chamber as short as 1.65m.
Both drill a 90mm pilot bore and can install up to 250mm diameter pipe through soil and rock. They are controlled by Rotasteer, the company's com- puterised magnet -ic guidance and detection system.
Its Aquaject water mist lub- rication system is also available. This uses a small amount of water injected into the air supply to the pilot bore hammer and backreaming tools to improve productivity.
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