


Symmetrix and Elemex Precision
and Control
Symmetrix and Elemex systems are part of a total overburden drilling solution from TerraRoc. They are used in both DTH and tophammer drilling, and the choice of solution depends primarily on the drilling conditions on site. The casing advancement systems are available either as a solitary ring bit or as a ring bit set.
Symmetrix - Productivity and precision
Symmetrix is a versatile solution for overburden drilling where ground conditions are difficult, time is limited and precision is crucial. Whether used in ground with big boulders, inclined competent layers or hard bedrock, Symmetrix drills until the required depth is reached. The system drills more quickly and accurately than any other method available today. The unique design of Symmetrix provides reliable results, which saves contractors money.
Elemex – for improved air control
The Elemex Casing Advancement System is the preferred system for minimizing the risk of settlements in surrounding structures. The unique design of the pilot bit directs the air over the drill bit surface reducing the air leakage into the ground. The directed air flushing enables the driller to be in full control of the drilling process.












