South Africa-based gold miner Anglogold Ashanti has selected 3D Laser Mapping, a global developer of laser scanning solutions, to supply their SiteMonitor system to support survey activities and boost safety at its Geita gold mine in Tanzania.
The Geita open pit gold mine is located 80km south-west of the town of Mwanza in the north-west of Tanzania and is the largest of the group’s eight open-pit mines in Africa.
A laser monitoring system, SiteMonitor is usually used in open pit mines for continuous or periodic stability monitoring of high walls that are unstable.
Combining laser scanning hardware and monitoring software, SiteMonitor includes a long-range RIEGL VZ-1000 scanner that uses echo digitisation and online waveform analysis to deliver improved performance and accurate measurement, even when the weather conditions are adverse.
The VZ-1000 scanner delivers accuracies of 5mm at ranges of up to 1,400m and can capture up to 122,000 points in each second with a 100 x 360-degree field of view.
Slope collapses and pit wall failures caused by unexpected ground movements can be identified at an early stage, thus protecting lives, equipment, capital, and preventing loss of productivity.
3D Laser Mapping managing director Jon Chicken described SiteMonitor as a critical mine survey and safety tool.
"The scanner and software are essential tools in preventing incidents and associated injuries, as together they provide a better understanding of the immediate, fundamental and contributing causes of slope failures and wall movements.
"The laser scanning system gives a user a far greater understanding of risk and helps ensure a safe working environment," Chicken added.
Image: SiteMonitor system is used in open pit mines for continuous or periodic stability monitoring of high walls that are unstable. Photo: Courtesy of 3D Laser Mapping.