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Drones for Mining in South Africa: An Interview with Hendrik Grobler of the University of Johannesburg
In this interview, we sit down with Associate Professor Grobler to explore how drones are reshaping mining operations in South Africa. From improving safety to enhancing efficiency and data collection, drones are proving to be indispensable tools in the mining sector.
Professor Grobler began his career in mining in 1991 after graduating in mine surveying from the University of Johannesburg. He later obtained his Government Certificate of Competency in 1994 and worked in various mines across South Africa until 2007. Since then, he has been sharing his expertise as a professor at the University of Johannesburg.
The Mining Engineering and Mine Surveying Department at the University of Johannesburg, where Professor Grobler teaches, is over 90 years old and continues to produce skilled mining professionals. The department offers undergraduate degrees in mining engineering and mine surveying, along with postgraduate programs. Each year, approximately 600 students are trained through these programs, many of whom are already employed in the industry.
One of the department’s standout features is its simulation mine—a rare facility in the world. Located in a basement on campus, this simulated mining environment allows students to gain practical experience without venturing into actual mines. Here, new technologies like drones and robots, such as the Boston Dynamics Spot and Flyability’s Elios 3, are tested and demonstrated. Additionally, the department has developed an extensive virtual reality platform, complete with a hydraulic drill rig and a blasting wall for hands-on training.
When it comes to drones in mining, two primary applications stand out: surveying and inspections. Drones enable frequent updates to surface plans, reducing risks associated with manual data collection. Underground inspections with drones can gather visual and LiDAR data in hazardous areas, aiding in maintenance and exploration efforts.
The advantages of drones in mining are clear. Safety and efficiency are enhanced as drones eliminate the need for personnel to enter dangerous zones. For instance, during a recent rescue mission, extreme heat claimed the lives of responders searching for a missing individual. A drone could have entered the area first, assessing conditions and guiding safe intervention.
Despite these benefits, there are challenges. South Africa enforces strict drone licensing laws, yet some mines operate drones without proper authorization. Training is another hurdle; operators must be adequately prepared to handle drones effectively.
Flyability’s Elios 3 has been particularly impressive. Its stability surpasses previous models, ensuring reliable data collection. The ability to rotate the camera vertically is invaluable for identifying survey markers. With LiDAR capabilities, the Elios 3 maps inaccessible areas, providing detailed insights crucial for block caving operations. Unlike photogrammetry, LiDAR works independently of lighting conditions and can penetrate dust and fog, making it ideal for South African mines.
Looking ahead, drones are poised to become integral to mining operations. While adoption is still in its infancy, their potential to enhance safety and productivity is undeniable. To fully integrate drones into mining, companies should invest in dedicated drone teams rather than relying on external contractors. Ideally, each mine should have multiple drones for regular mapping and monitoring.
This technology represents a paradigm shift in mining, offering a glimpse into a safer, more efficient future.