<p>The paper defines choice of the optimal excavation method for ore deposits, which are characterized by general irregularity due to their origin, occurrence and different content of the usable minerals. In such complex conditions, the choice of the excavation method is defined according to: the natural characteristics of the deposit and according to the techno - economic parameters of the comparison methods and the methods of multi-criteria optimization. </p>

The stability analysis was performed on the model of underground rooms of rectangular cross-section on the example of the underground mine ,,Baturinkaʻʻ. Geotechnical data of bauxite and surrounding rocks were used for the mentioned research. The analysis of stability was performed according to the Hoek-Brown criterion of rock mass failure and data processing was performed in the software program Phase2. In order to meet the set criterion of value of safety factors (Fs), when dimensioning safety pillars, used calculation of rock mass loading, in the form of panel.

One of the most important influencing factors on the economy of mines with surface and underground exploitation is the correct choice of haulage technology of ore and waste. The paper analyzes the haulage of ore and waste in the Lead and Zinc Mine "Sase" Srebrenica and determines the optimal haulage length on the four excavation blocks for the application of the new haulage system by using the mine trucks from the aspect of set criteria, increasing capacity and reducing haulage costs through the techno - economic analysis and optimization.The optimal haulage length is determined through the calculations of the loader capacity and the possible choice of the truck depending on the stated criteria.