Grade control geologists build blast-hole sample interpolations and define ore limits the shift before a bench is mined, but reconciliation against plant feed assays takes weeks and comes back as a single tonnage-weighted average with no spatial context. Dilution from waste contact misclassification and ore loss to low-grade stockpiles accumulate across the month invisibly. When the mill recovery drops, no one can trace which bench, which pit, or which domain contributed the shortfall.
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Grade Control Geologist reconciling block model estimates against plant recovery across 3 active pits with daily blast-hole sampling programs
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Mine Geologist / Grade Control
Reconciles block model grade estimates against production assay results and traces dilution to specific domains, contacts, and sampling patterns.
Process / Plant Engineer
Connects incoming mill feed grade variability to plant recovery performance and concentrate quality outcomes.
Mine Planner / Operations
Manages stockpile blending strategies to maintain plant feed grade within processing targets despite ore variability.
Lumina tracks ore parcels from blast-hole sampling through dig block classification to ROM pad and crusher feed, reconciling block model predictions against production assay results in near real time and surfacing the spatial patterns driving dilution.
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Ask questions in plain English, get instant answers.
I see a consistent -12% variance between Block Model estimates and Plant Recovery for material from Pit B. This suggests high dilution during blasting.
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