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As underground mines face mounting pressure to lift production rates, improve safety and extract greater value from increasingly capital‑intensive assets, operators worldwide are turning to integrated explosives and blasting solutions to deliver more predictable and efficient outcomes.
According to Derrick Menezes, regional manager for underground operations at BME, the need to optimise blasting performance is particularly pronounced in copper, gold and battery‑mineral operations across Asia Pacific, Africa and Latin America. These regions are experiencing growing expectations for safer, more efficient and more sustainable extraction practices that support the global energy transition.
“In many of these operations, blasting performance directly influences the productivity and stability of the entire mining cycle,” Menezes said.
“Fragmentation quality, dilution control, advance rates and downstream processing efficiency all depend on how well energy is delivered into the rock mass.”
In mature mining regions such as North America and Europe, the drivers are different but equally demanding. Here, operators are focused on extending mine life and maximising value from existing assets by accessing deeper or lower‑grade ore bodies that were previously uneconomic.
“These mines must improve ore recovery while reducing waste and energy consumption per tonne moved,” Menezes said. “At the same time, underground stability becomes increasingly critical, with tighter tolerances required to minimise overbreak and maintain excavation control.”
These pressures are accelerating the adoption of integrated blasting and explosives solutions that link blast design, products, initiation systems, charging technologies and performance monitoring into a single workflow.
“By integrating these elements, mines can achieve more consistent energy distribution within the rock mass,” Menezes explained. “This reduces variability in blast outcomes and delivers measurable improvements in fragmentation, overbreak and dilution control.”
Improved blast consistency supports higher development advance rates, more efficient loading and hauling, fewer secondary blasting requirements and better performance in crushing and processing circuits. Just as importantly, greater visibility into blast execution enables engineers to optimise designs, shorten cycle times and reduce unplanned disruptions through data‑driven decision‑making.
Integrated blasting systems improve control across the full explosives value chain, from design through to initiation and delivery into the blast hole. Electronic initiation systems play a central role by providing millisecond‑level timing precision. This reduces timing scatter and improves stress wave interaction within the rock mass, resulting in more uniform energy release, improved fragmentation and lower vibration levels.
“In confined underground geometries, precise timing is essential,” Menezes said.
“Improved burden relief reduces backbreak and overbreak, supports blast stability and contributes to safer, more predictable excavation cycles.”
Bulk emulsion explosives, combined with mechanised charging systems, further enhance performance and safety. By sensitising emulsions closer to the point of use and delivering them via mobile charging units, mines achieve more consistent loading and improved coupling between explosive and rock.
“This approach also significantly reduces personnel exposure in high‑risk underground environments,” Menezes added.
Digital blast design tools complement these technologies by modelling burden, spacing, confinement and energy distribution prior to firing. When combined with real drilling and charging data, designs can be continuously refined based on actual ground conditions rather than static assumptions.
A key enabler of underground blasting precision is the use of Automated Emulsion Charging Units (ECUs). These systems measure actual hole lengths and apply preloaded blast data to calculate the required charge mass for each hole.
“True hole depth often differs from planned depth due to geological variability and drilling tolerances,” Menezes explained. “ECUs account for these deviations and automatically adjust charge mass to match the actual void space.”
By aligning drilling accuracy with explosive loading on a hole‑by‑hole basis, ECUs eliminate inconsistencies in explosive distribution and improve powder factor control. Parameters such as burden, spacing, density and energy targets are applied consistently, resulting in more uniform energy input.
The benefits extend well beyond the blast itself. Improved fragmentation reduces oversize and fines, increasing loader productivity and easing pressure on crushers. Vibration, wall damage and dilution are also reduced, which is particularly important in deep or narrow‑vein operations with variable geology.
These capabilities are reinforced by BME’s AXXIS™ electronic detonator system and BlastMap™ digital blasting platform. AXXIS™ delivers millisecond‑precise initiation, improving sequencing accuracy and reducing timing scatter to enhance fragmentation consistency and lower vibration.
BlastMap™ enables simulation and optimisation of blast designs using geological and energy distribution data, allowing engineers to predict blast response and fragmentation outcomes before firing.
“Together, these technologies create a closed‑loop system that links design, execution and performance,” Menezes said. “The result is reduced variability, continuous optimisation and more predictable downstream performance.”
Optimised blasting also delivers significant energy benefits downstream. Improved fragmentation reduces the energy required for loading, hauling and comminution, lowering overall energy use per tonne mined.
Digital systems provide real‑time visibility into blast performance, vibration, energy distribution and environmental impact. Electronic initiation systems generate detailed firing logs that can be correlated with fragmentation results, blast movement and vibration measurements.
“When combined with analytics, this data enables objective evaluation of indicators such as peak particle velocity, energy efficiency and burden response,” Menezes said.
The availability of structured, auditable data also strengthens compliance and ESG reporting by linking blast design, execution and outcomes into a verifiable performance chain.
As underground mines become deeper and more complex, Menezes emphasised the importance of close collaboration between operators, technology providers and other stakeholders.
“Integrated blasting is not just about technology it’s about partnership,” Menezes concluded. “By working together, mines and suppliers can develop tailored solutions that match increasingly challenging underground conditions, delivering consistent performance, improved safety and greater operational resilience over the long term.”
