Currently, the development of the country's economy is characterized by the trend of globalization, which is constantly developing, modernizing, acquiring new forms and features, which ultimately radically changed the way of the world economy. The task was set to analyze and propose options for improving the investment attractiveness and efficiency...

By Semen Podvalny, Iana Zolotukhina, Olga Sotnikova, Ekaterina Prokshits

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 appli...

By Duško Torbica, Vladimir Malbašić, Dražana Tošić, Jovan Popović

Magmatic rocks of post-Late Eocene magmatic formation are widespread in the Sava segment of SavaVardar suture zone and adjoin areas. The rocks formed as a response to transpressional-transtensional tectonic activity preceded by the Cretaceous-Eocene compression of the Internal Dinarides and Tisia Unit as fragments of Eurasian continental lithospher...

By Zehra Salkić, Boško Lugović, Elvir Babajić

The article considers the issues of increasing energy efficiency of 6-10 kV controlled capacitor plants of power supply systems of energy-intensive facilities due to more accurate compensation of reactive power. Analysis of the most common circuits for connecting batteries of static capacitors using semiconductor and electromechanical switches was ...

By Vladimir Babenko, Alexandr Danilov, Dmitrii Vasenin, Valery Krysanov

The Strategy for the management and utilization of mineral resources of the Republic Srpska includes inevitably the mineral resource base as an essential element of material and social development, and it is one of the significant reliance forms on its own suorces in achieving economic development. In this sense, geological exploration, like an imp...

By Ranko Cvijić, Aleksej Milošević

Sizing the production capacity of underground coal mines is an extremely complex task with a number of specifics that must be taken into account when designing the mines. The main factors are the specific natural-geological conditions of the deposit, which determine the application of an adequate excavation system followed by organizational factors...

By Vladimir Todorović, Dražana Tošić, Jelena Trivan

The physical and mechanical characteristics of coal seams, immediate floor and roof significantly influence to the choice of systems (the methods and technologies) of coal underground exploitation, and in this paper, their grouping and sorting by importance for the conditions of active underground mines in Serbia was carried out. The research is ba...

By Jelena Trivan, Dražena Tošić, Vladimir Todorović

The "Ribnica" landfill of the "Vrtlište" surface mine bordered the river Ribnica until during 2017, a landslide was started and the river Ribnica was interrupted, and a water reservoir was formed. After the completion of the tunnel that diverted the river Ribnica, its previously interrupted riverbed in the downstream part is planned for continuatio...

By Jasmin Isabegović, Kenan Mandžić

This paper presents study results of the qualitative characteristics of coal deposit Kotezi. Regional geological researches were conducted from 1983 to 1987, and detailed from 2014 to the end of 2018.Tests were performed on the following coal quality parameters: average thickness of pure coal in coal layers, total moisture content, ash content, tot...

By Dževad Forčaković

The paper assesses the vulnerability of 27 groundwater bodies in the basin of the river Bosna, ie Spreča, then the river basin of the Drina river (Drinjača), as well as parts of the immediate Sava river basin (Čelić area - Gnjica river and Turija basin) by the GLA method. For each water body, the determination of the effective soil capacity, degree...

By Dado Srkalović, Željka Stjepić Srkalović