Elexon’s mining division, Elexon Mining, provides the world’s best tracking instrumentation for measuring ground movement in underground and surface mines, as well as in the Civil Engineering sector.

Working with some of the worlds peak mining companies, including Rio Tinto, Newcrest Mining, Chevron and BHP Billiton, Elexon Mining has developed solutions that enable active management of the ore body, helping to improve safety and productivity management. Elexon Mining has also developed subsurface sensors that will measure tilt and pore pressure to assist open pit mine operators to proactively manage their mines and be in a better position to predict failures that can endanger life and mine assets.

Elexon Mining is actively designing and manufacturing new products to further support proactive mine management, and partners with research organisations such as Mining3, CSIRO and various universities to develop and test value-adding technologies for modern mines.


Cave Tracker

The Cave Tracker System is a world-first technology that enables monitoring of ore movement while it is still in the cave. This ability provides near real-time data to allow mine operators to analyse the behaviour of caves and actively manage cave propagation and extraction.

The Cave Tracker System is in an advanced prototype stage and has been validated in two cave mines. The results are highly encouraging and the measured data is already being used to complete the mine’s understanding of what is happening in the cave.

Smart Marker System

The Smart Marker System uses hardened radio frequency identification technology to automate the marker detection process, allowing the measurement and analysis of underground ore movement to be carried out without affecting production draw rates.

By automating Smart Marker detection and providing high resolution data that can be easily viewed and interpreted, the Smart Marker System makes it easy to monitor and assess flow in mass mines.

This Smart Marker System provides a more robust and versatile alternative to other cave monitoring systems as the data is transmitted wirelessly through rock, and thus is not vulnerable to hole shearing/dislocation experienced with current cave monitoring systems.



Networked Smart Markers are a robust and reliable alternative to Time Domain Reflectometers for measuring the location of the Cave Back.

Understanding the cave back position is critical for managing the propagation of the sublevel cave until it breaks through. The risks of uncontrolled caving include air blast, resource sterilisation and excessive waste ingress.


Elexon Mining has developed Geo4Sight; a wireless subsurface monitoring system for challenging geotechnical environments where the use of cabled monitoring systems is impossible, impractical or unreliable. Geo4Sight is initially offered as two distinct solutions:

Geo4Sight Tilt: Real-time, wireless subsurface movement monitoring.

Detect and manage ground movement to reduce the likelihood of failure, or reduce the impact of a failure, in challenging environments where traditional cable-based systems don’t perform.

Geo4Sight Pressure: Real-time, wireless pore pressure monitoring.

Gives you greater insight into hydrological conditions in challenging environments where regular cabled systems fail or have serious limitations.