Case Study: Coeur Mining achieves clearer drilling ROI and resource estimation with Geovariances ISATIS

Coeur Mining - Customer Case Study

Coeur Mining worked with Geovariances to better quantify the return on investment of further drilling and the risk in resource estimation. The mining company needed a more accurate decision-making tool to evaluate whether additional sampling would improve estimated recoverable resources without wasting time moving between software packages. Geovariances provided its ISATIS software along with consulting and training to support advanced geostatistical workflows.

Geovariances helped Coeur Mining build and validate a customized workflow for variography, declustering, kriging, conditional simulation, and drilling optimization. Using the Palmajero project data, the team compared different drilling densities and showed that increasing sampling improved resource confidence: at 30x30 m drilling, mean grade recovered improved to 70.8% versus 63.9% at 55x55 m, while recovered metal rose to 94.5% from 90.2%. Geovariances enabled Coeur Mining to make more data-driven drilling decisions, reduce overestimation risk, and support longer-term mine planning.

Coeur Mining

John Sims

Director of Mineral Resources