Blast engineers design patterns using empirical rules and historical precedent, but rarely close the loop between design intent and realized fragmentation. Explosive energy distribution, burden-to-spacing ratios, and vibration monitoring data sit in separate systems while downstream crusher throughput and screen oversize reports are compiled days after the shot. Without that feedback loop, over-drilled benches waste explosive cost and under-fragmented shots cause crusher choke and SAG mill ramp-down.
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Drill & Blast Engineer reconciling blast design parameters against crusher throughput and fragmentation outcomes across a multi-bench open pit
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Mine Geologist / Grade Control
Correlates geological domains and rock hardness variability with explosive energy requirements and fragmentation outcomes.
Process / Plant Engineer
Tracks the downstream energy and throughput cost of coarse fragmentation in the crusher and SAG mill circuit.
Mine Planner / Operations
Integrates blast scheduling with dig plan sequencing and crusher feed targets to minimize plant starvation and rehandle events.
Lumina correlates blast design parameters against post-blast fragmentation image analysis, crusher throughput, and vibration records to surface the specific pattern variables driving poor breakage outcomes and quantify their downstream energy cost.
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The last three shots on Bench 1085 came back with a P80 of 412 mm against a 250 mm design target, and all three ran a powder factor of 0.62 kg/t in the harder porphyry domain versus 0.78 kg/t on your high-performing benches. The coarse feed cut primary crusher throughput roughly 9% and added about 1.4 kWh/t at the SAG mill the following shift. Recommend lifting powder factor to 0.78 kg/t and tightening burden from 6.5 m to 5.8 m in that domain before the next firing.