o:526 Selection of the optimal contour of the open pit in mining the lead and zinc ore deposit with the increased mercury content en Abstract: Mining processes are complex and complicated, with many different economic, technical, environ-mental and other parameters that must be planned before the project gets its practical value. Many of these parameters are evaluated independently of others, due to the expediency and difficulties in predict-ting values for variables under consideration. Costs, prices, reserves, mining and processing of ore, as well as many social aspects, such as issuing permits for works, are absolutely crucial for the project evaluation. Each ore body is different, but the main steps in the open pit planning, when the main goal is to maximize NPV, follow the same principle. These steps are presented as the linear for simplicity. The actual planning process is an iterative process, in which some steps or a combination of steps are re-peated many times with the sensitivity analysis. Received: 05.05.2021. Revised: 20.05.2021. Accepted: 24.05.2021. Keywords: software deposit modeling, optimal open pit contour, net present value 91552100 69334281 1552099 10.5937/mmeb2101035K 2022-08-18T16:55:11.478Z 44 yes 46 Daniel Kržanović Institut za rudarstvo i metalurgiju Bor ; Mining and Metallurgy Institute Bor Radmilo Rajković Institut za rudarstvo i metalurgiju Bor ; Mining and Metallurgy Institute Bor person Nenad Vušović Tehnički fakultet Bor ; Technical Faculty Bor person Milenko Jovanović Institut za rudarstvo i metalurgiju Bor ; Mining and Metallurgy Institute Bor person application/pdf 656062 https://unilib.phaidrabg.rs/o:526 no yes 1 70 92000001 71A03 Mining and Metallurgy Engineering Bor 1-2 35 42 2021