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The paper deals with verification of the sl udge stabilization from retention tanks by using modified cellulose fibers. Verifica tion of the method was implemented through laboratory tests and field test. Laboratory te st take place in VUHU a.s. Most and field test was performed at the quarry Ji Е™Г­, Sokolov coal company, a.s. legal successor. Stabilization took place in order to allow extr action of sludge from retention reservoirs. These reservoirs are build for longer time period and must be cleaned due mainta...

Public Enterprise Elektroprivre da Srbije (EPS - Electric Power Industry of Serbia), the dominant electricity producer in Serbia, is a 100% state-owned public company. The Kolubara Mining Basin (MB Kolubara) with its open cast mines is one of 11 subsidiaries of EPS. In accordance with the Serbian Energy Strategy by 2015, one of the EPS priorities is a modernization and improvement of the efficien cy of EPS' coal mining operations at the Kolubara basin and significantly improvement the quality and uniformity of the...

This paper is focused on the sulphur and su lphur forms distribution in the Antonin coal seam at Jiri and Druzba open-cast mines in the North Bohemian brown coal basin, in the Czech Republic. Briefly describes the basic geological structure of the area, deals with sulphur forms, sulphur genesis, chemism, coal sampling and analysis from the exploration boreholes. Overall 32 coal samples were precisely analyzed. The results of this analysis were used for the construc tion of the graphic outputs. Based on these resul...

A comprehensive review of published books and articles shows that discontinuities, especially joints within coal-bearing depos its are important features that must be considered during mine planning and desi gn. Less attention has been paid to orientations of joint sets and other disc ontinuities relative to mining face in proposed rock mass classification systems. In fact the structural competence of mine roof rock is determined primarily by the discontinuities that weaken the rock fabric. In this paper the effec...

Trepça mine in Stantërg during its activities of exploitation periods divides this process in three stages of exploitati on, where in the first stage there are old exploitations of levels from 830m and 610m, and the way of exploitation method, dimensions of backbones and securing plates has been change d as a result of determination of height of floor-horizons between them. The heights of 30m and the angle of small fall allows this method of exploitation to be more favourable and secure. Securing backbones, are ...

Mining bodies that lay in the depth of Earth’ s core always appear as irregular bodies in different geological- mining circumstances. Mine “Trepça” in Stanterg since the beginning of its work in 1930 up to now has applied several exploitation methods of mining bodies, and one of these methods is the so called Frontal Method. This method is applied in cases when the ore body has small sizes in length from 30m and the fall angle up to 30º. During the app lication of this method, the securing backbones have b...

All Kosovo mines have undergone the different declines and degradations in transition period. Some of the underground mines have also undergone the flooding under water as a result first of the war in Kosova, because of the damage of dewatering system, the lack of investments and disorganisation of mine’s management, undefinition of the ownership status of mines, the interference of peoples interest, the ownership status, the resource of no one without any care at all, th e transfer from the monist system to the...

The objective of mine closure is to prev ent or minimize long-term environmental damage, and to create a self-sustaining natural ecosystem or other land use based on an agreed set of objectives. The Romanian mine closure legislation s hould be enforced in the coming years for taking best follow up actions and management of post mining closure. The mine closure is a process which should begi ns during the pre-feasibility phase of a project and continues through operations to lease relinquishment. The closure of min...

Contribution notifies of the variant solutions of the recovery of consequences of chemical uranium mining in the Czech Republic in the Straz pod Ralskem region. Remediation is realized by a state company DIAMO. In the chemical extraction period over four million tons of sulf uric acid and other chemical s were injected into the ground, whereas approximately 370 million cubic meters of groundwater were contaminated. Currently, the contaminated water is pumped from the underground to the surface and it leads to liqu...

Efficient protection and construction of engine ering and other struct ures in seismically active areas is a series of contradictions, where an optimum solution must be found, which does not comprise a compromise at the expense of safety and security of the people, and which minimizes damage of property. Along with the increase of the needs for energy, the need for open pit mining production increases, which is related to the mass blasting with incr easing quantities of explosive, and nearing to the population cen...

Praid salt deposit is one of the largest in Europe: the salt body has an elliptic shape, with diameters of 1.2 km and 1.4 km, the depth being extended until 2,700 m. The mining methods employed in time are various: be ll-shaped rooms, trapezoidal rooms. Nowadays, the small rooms and square pillars is employed, the method being described in the paper. At 120 m depth, the cure and treatment facility is located. The underground atmosphere is highly ionized and very eff ective in treating respiratory diseases. The Pra...

The Bor-Ulukışla Basin situated in the south-eastern part of the Tuz Gölü Basin, Central Anatolia, provide prominent example of lacu strine basins and varying assemblages of evaporite and detrital minerals. The evaporatic sedimentation formed in the central part of the basin as a shallow, saline lake syst em, where abundant ha lite and Ca-Na sulfate deposits. Sodium sulfates and also halite depos its have been explo ited from the recent salt-playa lakes in the basin. The evaporite s were deposited by related t...

The Chah Zard Ag–Au epithermal deposit is located within an a ndesitic to rhyolitic volcanic complex in central part of Urumieh–Dokhtar Magmatic Arc (UDMA), west– central Iran. The deposit is formed in breccia bodies dominantly hosted by rhyolite porphyries. Geological field relationships s how that epithermal mineralization occurred in close association with a phreatomagmatic fracturing event, being localized in breccia cements, and formed as disseminated sulfides in the matrix of the more permeable breccia...

Within the lignite deposits located in the Oltenia coal basin, frequent sand bands are emerging, carriers of signifi cant aquiferous horizons and complexes. The geological pattern induces an important variation of hydro-geological conditions along the deposit’s spreading, which in turn gives difficulties in mining technology selection. Determining the problem’s solution involves th e versions ranking from the strongest to the weakest, in relation to all the criteri a. Both maximum and minimum criteria can exis...

Costs are present in many daily decisions they take managers from lower hierarchical levels, but especially importa nt for strategic decision taken at top management level. The very adoption of certain strategies fo r the enterprise is based on analytical considerations which require methods of ec onomic and financial evaluation of projects, methods that can not be imagined outside costs. Allocation of resources to the enterprise are based on estimated costs, just as they and replacement of assets. Computation of ...

Ground vibrations arising from excavation with blasting is one of the environmental problems in mining industry. The prediction of ground vibrations and the realization of controlled blasting based on this prediction have a great importance in order to minimize the environmental effects of blasting. The purpose of this study is to analyze the ground vibrations induced by blasting at Akyol Quarry which selected as a test site after the determination of the geomechanical properties of the rock mass with a computer s...

We propose a device which produces a high density cloud of spray that is consisted mostly of water micro droplets. The cloud automatically occurs when an electromagnetic pulse or/and shock wave from a close explosion matches the device. The ratio of absorbed energy of the dangerous shock wave depends on the density of the cloud and on its spreading speed as well as on the size and the mass of micro droplets. We have developed a mathematical model of physical processes in the Absorber. Numerical simulations show sa...

The paper presents the evaluation of mine disasters statistics with particular reference to aerological disasters which took place in Polish coal mines from 1945 to 2008. These disasters concern the events which the death of five or more miners working in the mine underground. They were caused by: breakout or outflow of carbon dioxide, methane explosion, tremors and roof falls, explosion of coal dust, fires, heat strokes, water outflows or breakdown of mine equipment. The special attention was paid to fire prevent...

Abrasive waterjet technology (AWJ) is one of the fastest growing machining processes. It is environmentally friendly, can machine almost any engineering materials. It has received considerable attention from various industries due to its beneficial characteristics. Compared with traditional and most non traditional machining technologies, AWJ exhibits a high potential in the field of the shape machining of hard or brittle materials such as ceramics, glass and rocks. The present study investigates the machinability...

Bauxite mineralizations of Seydisehir reside in western Taurides, in Konya region. Mesozoic limestones form the base of local stratigraphy. On top of these Eocene aged limestones and flysch units have precipitated. Allochthonous Paleozoic aged limestones of Hadim nappe units have moved on top of all these units. Formations of the region have undergone extensive tectonic activity. Bauxite mineralizations in the region are associated with Mesozoic limestones. They are located in karst spaces of limestones. These spa...

GIS enables spatial or nonspatial data to be transferred or stored into computers and various spatial, numerical, verbal analysis to be made by using this data prepared for this purpose. Although GIS has been used immersely in many fields, it hasn’t been widely used in mining. The aim of this study is to show the applicability of GIS in mining and its benefits for this field. With the help of the software developed in the scope of this study, it is aimed to plan the maps belonging to area of mining licence in th...

Uricani is one of the few active remaining collieries from Jiu Valley, in the Meridional Carpathian Mountains. The paper deals with the stages involved in the process of computerized design of the waste dump and the various overpassed obstacles in order to gain all the necessary information available from different sources. The advantages of this approach of waste dump design conclude the paper.

The project No 17005 (2008-2010) is a correlation Subotinac locality in the global wine and gave immense larger investigation of Subotinac (The Aleksinac basin) in respect of geological research. This paper is the result of research by the project of the Ministry of Science and Technological Development No 17005 R. Serbia. Papir presented corelation results of previous prospecting and detailed geological study of the basis for a new supplementary geological and chemical-technological research oil shale in the vici...

Basing on physical model of heat exchange between human body and environment, predicted thermal load under the work site parameters, specific for deep mines, was defined in the paper. The relationships included in EN ISO 7933 standard were used for this purpose. Level of heat accumulation, degree of skin moistness, maximum volume of sweat and body dehydration were evaluated. These parameters we used to define the safe time of work under difficult climate conditions. The calculations were made in respect of acclima...

DelPat program makes possible to design of blasting operations and cost estimation with ground vibration analysis arising from blasting. In this study, these applications of DelPat program were used for blasting works in excavation of Boyabat Dam and H.P.P. (Hydroelectric Power Plant) construction and the results were researched extensively. Blasting design was done and the results of planned blasting works and ground vibration measurements were analyzed by use of DelPat. At the end of some shots, 35 events were r...

The pre-Caspian basin has been formed from Paleozoic to Cenozoic time and the Kashagan field is situated in the southern part of Pre-Caspian depression in the Southern flung of Astrakhan-Aktyubinsk elevation system of basal complex and associated with Tengiz- Kashagan interbasin carbonate platform. The platform is composed of separate carbonate early Carboniferous blocks resting on the common Devonian (late Fransian-Fammenian) carbonate base. Four of them are: Kashagan, Kashagan South-West, Aktote and Kairan are l...

To allow a truly in-situ elemental analysis, an Australian resource company commissioned the development and building of a down-the-hole deployable ED-XRF sensor. The instrument was designed to be deployable up to a depth of 30 m for drill holes of varying diameters as well as being run in a bench-top mode. Following the development and upon commissioning, the ED-XRF system was investigated in the laboratory for its suitability for use in the Iron Ore industry by using well characterised crushed iron ore samples, ...

Abrasive waterjet machining (AWJ) with its wide ranging applications, offers a variety of advantages. It is very effective in machining materials which are hard to machine such as steel, composites and stones etc. The efficiency of the cutting process depends on several factors (e.g. hydraulic, nozzle and cutting). Kerf geometry, depth of cut, surface roughness and material removal rate are often used as target parameters. Although, several researchers studied the influence of process parameters on different mater...

Helth, Safety and Environmental management program is a dynamic program prepared to exploitation oil and gas offshore. This project program is prepared to accorded ISO standard and Romanian Standard and regulation. This program is following action: proactive programs for the health and safety, identify the source of pollution,-Plan to reuse and recycling the disposal materials,-Enhance the safe management of Naturally Occurring Radioactive Material in processing plants, - Prevent environmental pollution form the d...

Kosova is a country rich in coal, mainly lignite type and regarding to the reserves, it is ranked in the fifth place in the world. Estimated resources of lignite are average 12.7miliard tones, which are distributed in three main basins (Kosova, Dukagjin and Drenica). Approximately 50\% of entire country natural resources constitutes this type of coal. Thermo energetically installed power is 1478 MW , and lignite supply is from open pits, Mirash and Bardhosh with the use of lignite capacity of 16 million tones per ...

Quartzite which is used in glass industry as raw material includes useful and harmful components. Grades of SiO2 (Silicon Dioxide) the useful component and Fe2O3 (Iron (III) Oxide) the harmful component effect the product quality significantly due to the method of glass production. Furthermore, it’s necessary to determine grade distribution of quartzite ore body, to gain optimum benefit from the ore body that assessed by quality distribution. It is required that to mix high grade and low grade ore bodies togethe...

The goal of the work was verification of floatabilty of bituminous coal from mine Staszicz with different collectors (Flotalex and Montanol), which are generally used in coal cleaning plants in Czech Republic and Poland. From the flotation and petrological results follows that floatability of given coal is approximately equal at Flotalex and Montanol application.

Erenkoy magnesite deposits reside in Eskisehir and Bilecik provinces of northwestern Turkey. Local geology consists of metamorphites of blueschist facies in the base; ophiolitic rocks with mainly serpentinites, peridotites; ophiolitic melanges with a varying range of lithology: cherts, calcschists, blueschist rocks, limestone and on top of all these there are neogene sedimentary units that are mainly consisted of sandstone and clay formations. Magnesite deposits in the area are associated with ultramafic rocks: se...

Geoenvironmental analyses of tailing dams of Norilsk region, typification of hydrotechnical constructions on safety requirements and recommendations for stability providing were carried out. The results of investigations permitted to provide safety exploitation of tailing dams, improve the environmental situation in region and increase the efficiency of production.

The paper deals with the concept of Global Pollution Index – GPI – and the algorithm developed in order to compute the GPI so this become a versatile tool for assessing the environmental evolution during the reclamation process of a damaged area. GPI is also a proper comparing tool between the environmental qualities from various areas. An apply example of GPI conclude the paper.

An ultrasonic sound wave has been used in rock mechanics to determine rock properties for many years. Because it is a relatively simple, low-cost and non-destructive testing method compared to others. Water content, porosity, and cracks in the rocks structure are some of the most important parameters for P and S-wave speed. In Rocks, under uniaxial compression stress, the account of space inside the compressed rock is reduced while an ultrasonic sound waves speed is increased. However, after a certain level of com...

The main goal of a small scale stream sediments geochemical survey is to identify the promising areas for the further exploration in next steps of geochemical exploration. To achieve the target the thresholds value of each interested element within the geochemical sample must be specified at the first step. In this research it is attempted to use the raw geochemical data after pre-processing to delineate the anomalous area within the Khusf 1:50000 sheets which is located at 35 km west of Birjand at the south khora...

The main Romanian lignite reserves are located in the south west of the country, in Oltenia coal basin and could be efficient exploited in open pits. After a briefly geological description of lignite deposit from PeЕџteana open pit, the paper deals with the sand and gravel layer located as overburden of lignite seams. After the granular analysis, the technique of modeling the gravel layer and the reserve evaluation, the economical end environmental implications conclude the paper.

With contemporary development of computer techniques has been enabled execution of work by GPS satellite system in mining operations which GPS system serves for collection of data related with mining operations and explosive storage facilities. Today, these computers are part of standard equipments in the most part of mining operations. These systems offer a possibility of connection with tachograph, readers interested in the data of mining operations, measurement of coordinates by handheld GPS, transfer of data i...

A new practice has started to be implemented in Kosovo, in this south-eastern region of Europe, and it is 24-hour monitoring of vehicles and facilities with strategy for the development of mines in Kosovo with the help of GPS system. These vehicles and static facilities (the explosive storage) have a sophisticated system, which enables a precise monitoring of movements in and around them. Global Positioning System (GPS) currently presents the greatest achievements and application in the communication technology. B...

Most crude oils include paraffin that crystallize in low temperature to create cluster, precipitated in the form of sediments and making the free flow of oil more difficult. Such situations take place mainly in the autumn-winter season. Created sediments settle on the surfaces of mining equipment, pipes and reservoirs. This situation cause exploitation difficulties connected with increased flow resistance and in consequence decrease or lack of oil flow in pipelines. In order to protect of pipes and machinery again...

The great reserves and also convenient conditions for the use of coal represent very strong arguments for the justification of private capital investment in the energy sector of the Republic of Kosovo. The trend of living standard increase, development of industry and market demands within the South-East Europe pose the need for the construction of new power generation capacities. Therefore, the purpose of this paper is the introduction of possibilities for the coal supply of generation capacities up to 2000 MW in...

Recent trends in the ornamental industry have increased the use of granite for various decorative applications owing to its outstanding mechanical properties and multicolor. Machining of granites with conventional systems is costly. Therefore, new technologies are being developed for cutting and processing applications of granites. Abrasive waterjet cutting (AWJ) is one of the non-traditional machining processes that have been used extensively in various industrial applications. It enables to cut materials being h...

During the production and service to the humanity of mine resources that are needed both by industry and construction of new grand buildings and plants that are the basic news of the modern world parallel to the urbanization and the increase in population, it is known that, like it has been in the past and will be in the future, works of excavation by blastings are inevitable. In order to designate the effects of the blastings on surrounding area, measurements of concussion and air shocks are very important. This ...

The main goal of core analysis is to reduce uncertainty in reservoir evaluation by providing data representative of the reservoir at in-situ conditions. Core analysis has to be integrated with field and production data to minimize reservoir uncertainties that cannot be addressed with other data sources such as well logging, well testing or seismic. These requirements define the coring objectives, core handling and core analysis scheme. These objectives cannot be achieved by coring a single well. Coring program is ...

In this project there have been considered management opportunities of the explosion material in ways of work safety, the setting and affects of this material in case of its activation without our approval. Site safety of the explosive material, its potential energy, its activation and its force depend on time reaction. Displayed are thermodynamic diagrams as well as the exchange of potential energy into the suppression force and underground storage facilities dimensioning of the explosive material as well as the ...

Ornamental stone sawability is important in predicting the prime cost of production and planning of the stone quarries and factories. Ornamental stone sawability with two standard methods, wire and circular sawing, is dependent on many parameters including; the stone that be sawn and machine characteristics and saw operating characteristic. The investigation of these parameters and the determination of the optimum working conditions for sawing machines in the stone industry is significant for establishing the most...

This paper is the result of research by the project of the Ministry of Science and Technological Development No 17005 R. Serbia. Some of the results of this collaboration are presented in this paper. The project No 17005 (2008-2010) was carried out research in the locality Subotinac (Aleksinac oil shales deposit). Some of the results of this collaboration are presented in this paper.

Conveyor belt slip on a driving drum belongs to dangerous accidents that may result in a fire and burning of the rubber belt cover and drum coating under not well described conditions. To prevent such situations temperature of the rubber coating is often monitored by optical methods. We argue that these optical measurements may not monitor the initial phase of belt slipping thoroughly enough and that they cannot predict the incoming danger. We propose to measure continuously the temperature gradient in the rubber ...

Coal is one of the main energy sources in Turkey; it is used for both domestic heating and energy generation in power plants. However, most of these coals have low calorific value, high ash and sulfur content and high slagging potential. Therefore, they usually need to be cleaned before using in heating or power generation. Coal preparation operations consider the removal of ash forming material from the Run-of-Mine (ROM) coal. Dense-medium separators are employed in the majority of coal preparation plants for thi...