 Operational dilution in open-pit mines can lead to deviations from the plant production levels. To address this issue, a methodology was developed which takes into account the uncertainty associated with the ore grades. This approach allows for the identification of regions with a high potential for operational dilution, enabling the adjustment of the plans accordingly or the use of the results as a factor to correct the plant data. This article was authored by Ties Renata Kamara, Ronald Schaeffer-Leal, and Rodrigo de Lemos Peroni.