The exploitation of copper ore at the Open Pit Južni Revir takes place in complex natural and technical conditions, and a special feature is that landslides occurred on the Eastern slope of the mine. The occurrence of landslides in this part of the Open Pit threatened the continuity of the ore exploitation process in the mining system of excavation-processing, which is why it is necessary to reconstruct the Eastern slope of the mine. In the paper, the impact of the reconstruction of the optimal contour of the Open Pit Južni Revir, due to the need for landslide rehabilitation, on the net present value (NPV) was analyzed.