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March 26th, 2014
ZEB1 Hand Held Laser Scanner Strikes Gold at Historic South African Mine

“The results we are getting using the ZEB1, combined with our Mine Works GIS, are better than we could have imagined!” commented Koos Verster, Chief Surveyor of Barberton Mines Ltd. “We normally strive for 95 per cent or higher accuracy but this combination is delivering a 100 per cent, not to mention the increase in productivity we have achieved. The ZEB1 is also withstanding our difficult environment, performing better than we hoped. It has been to some of the most extreme reaches of the mine, for prolonged periods of time, yet shows no undue effects.”

Prior to the introduction of CAD in the early 90’s, Barberton Mine conducted the majority of stope survey work through offsetting with a 2D tabular deposit method. This did not highlight features such as folding, branching, thickening or thinning of mineralisation. Following the introduction of CAD in 1994 measurements were made using a hanging compass and clinometer. This method was far more accurate and enabled the production of 3D models but was, however, very time consuming.

“Our previous working practices had been in place for a long time,” continued Verster, “and we often had to make compromises between accuracy and survey time. All of these issues have been overcome since we started working with the ZEB1.”

The Barberton Mine is located 10 kilometres north east of the gold rush town of Barberton in the Mpumalanga province, 260 kilometres to the east of Johannesburg. The lode gold deposit is hosted in a volcanic and sedimentary sequence of the 3.5 billion year old Barberton Super Group. The extreme age and complex structural history of the ore body have resulted in a wide spectrum of lode shapes and dimensions. Various mining methods are employed due to variations in the deposit from the mine entrance level to depths of 1,450 metres, but the majority of tonnes mined are by semi-mechanised cut and fill.

Developed by CSIRO and commercialised by UK based 3D Laser Mapping, ZEB1 uses robotic technology called Simultaneous Localisation and Mapping (SLAM). The ZEB1 system includes a lightweight laser scanner mounted on a simple spring mechanism, which continuously scans as the operator walks through the environment. As the scanner loosely oscillates about the spring it produces a rotation that converts 2D laser measurements into 3D fields of view. Its ability to self-localise makes ZEB1 ideally suited for use indoors, underground and in other covered environments, where traditional solutions that utilise GPS don’t function well.

www.3dlasermapping.com

ZEB1 was developed by CSIRO, Australia’s national science agency, and is licenced to GeoSLAM (a UK based start-up company). The competitively priced ZEB1, now exclusively available from 3D Laser Mapping, allows for fast data capture without any complex set up. ZEB1 is easy to use, truly portable and does not require expensive software or high end computers to process the captured data.  

3D Laser Mapping is a global developer of laser scanning solutions for sectors such as mapping, mining and manufacturing. 3D Laser Mapping specialises in integrating laser scanning hardware with their own software and peripherals to create solutions at the cutting edge of technology. Through a worldwide network of distributors 3D Laser Mapping is able to provide frontline support and service for a growing international client base. For further information see www.3dlasermapping.com

CSIRO, the Commonwealth Scientific and Industrial Research Organisation, is Australia’s national science agency and one of the largest and most diverse research agencies in the world. CSIRO works with leading scientific organisations around the world, and is recognised internationally for the quality of its research. CSIRO’s research is performed by the 11 Divisions, which are the business units of CSIRO. CSIRO is one of the largest and most diverse scientific institutions in the world with more than 6500 staff located across 56 sites throughout Australia and overseas. For further information see www.csiro.au
CSIRO’s Digital Productivity and Services Flagship is a $48 million research initiative targeting productivity growth in Australia through frontier services innovation and by unlocking the value of a national broadband infrastructure. Through its research the flagship will help add value to the Australian economy by developing and delivering more efficient and innovative services that improve people’s wellbeing and prosperity. For further information see www.csiro.au/dpas