The conventional long-term open-pit mine schedulers usually rely on pushback-bench-panel approach, that is, after the pushback design, blocks within the same pushback and bench are grouped into one or multiple user-defined panels. These panels are then assumed to be homogeneously mined based on their inventories of different grade-bins. This large-scale aggregation of mining blocks within a panel misrepresents the selectivity and accessibility of materials to be extracted in each year. KPI-COSMO generates optimized extraction sequences based on the actual blocks from the input block models. This approach combined with the scheduling constraints of KPI-COSMO (slope angles, minimum mining width, maximum annual vertical advancements, etc.) reflect the expected mining selectivity and the supply of material from open-pits.