South Africa’s transition from non- electronic to electronic initiation has accelerated at large openpit mines, but adoption across midtier mines and quarries has lagged, says mine explosives solutions provider BME.

The company notes that the barriers for midtier mines tend to be practical rather than technical, informing the development of its VIPERTRON electronic initiation system, which should lower the threshold for mines using dated conventional systems.

Four factors that limited uptake historically were cost perception, complexity concerns, operational disruption risk and infrastructural requirements, says BME technology and marketing GM Nishen Hariparsad.

Many operations regarded electronic detonators as a “premium technology suitable only for large mines” and assumed that advanced electronic initiation systems required specialist skills and extensive training, resulting in a reluctance to change established blasting practices and concerns about hardware investment.

VIPERTRON, he adds, was developed specifically to address these concerns.

“The system delivers the precision, programmability and blast-control benefits associated with electronic initiation while maintaining a field experience that is familiar to crews accustomed to conventional detonators. It reduces the complexity of deployment, simplifies programming and blast preparation, and lowers the threshold for adoption.”

The shift is as much conceptual as it is technical, as VIPERTRON changes the discussion from “electronic initiation as a premium option” to “electronic initiation as a productivity tool”, argues Hariparsad.

Further, by making electronic timing more accessible and practical, mines can achieve measurable improvements in fragmentation, muckpile movement, vibration control and downstream processing efficiency without requiring wholesale changes to blasting operations.

Skills Transition, Operational Support

South Africa’s shortage of specialised mining and blasting skills reinforces concerns about complexity. Consequently, VIPERTRON is designed to build on existing competencies rather than replace them, says Hariparsad.

“One of the key design philosophies behind VIPERTRON has been to make the transition to electronic blasting as straightforward as possible. Experienced blasting crews already understand burden, spacing, timing principles, explosives loading and blast design fundamentals.”

Therefore, training focuses primarily on system operation and programming. This ensures that blast preparation workflows remain familiar, and allows for adoption to occur progressively – rather than through a complete operational overhaul – consequently enabling existing blast crews to become competent users.

BME typically supports implementation through formal operator and shotfirer training, on-bench technical support, initial blast design assistance and field mentoring during early deployments, as well as performance monitoring and optimisation reviews.

Practical Application

The practical impact of timing was illustrated during a Gauteng granite-quarry trial, during which a 25 ms change in inter-row timing produced an 8.45% reduction in D50, and a 2.64% reduction in D18 size distribution.

“The significance of the trial lies in demonstrating that relatively small timing adjustments can produce measurable changes in fragmentation. An 8.45% reduction in D50 indicates a noticeable shift towards a finer and more uniform rock size distribution. A 2.64% reduction in D18 further suggests improved fragmentation across the finer fraction of the muckpile.”