The load exerted on support pillars depending on geometrical parameters of coal auger mining system and mechanical parameters of coal seam roof is estimated. The authors validate the method of reducing coal loss in pillars in coordination with the pillars geomechanical parameters. 

Key words: support pillar, coal auger mining method, undermined coal seams.

In article the methodical approach to definition of standard sizes of losses and dilution is considered by working out of nonmetallic deposits of building materials by underground way. In the given work conditions of formation of losses and dilution a mineral are shown at working off the nearcontact zones and the sequence of their calculation is resulted. And also the indicator which characterizes a parity of the maximum possible area of a holding strap of adding breeds to the area of cross-section section of the development, the providing admissible maintenance of a regulated component in end production is offered. 

Key words: losses, dilution, the technique, classification, rationing, planning, extraction indicators

The chamber mining experience in block no. 01 within the protection pillar, the North wing of the Eastern area at the Tashtagol deposit is reported. It is established that the specific explosive consumption in the chamber blast breaking, including the ore breaking  and secondary crushing amounted to 0,549 and 0,065 kg/t, respectively. The cumulative stowing material volume consumed equals to33 000 m3. 

Key words: chamber, block, stowing, explosive.

To determine the temperature field around the filling mass and the cleaning chamber for field conditions Badran developed a two-dimensional mathematical model of heat transfer from the mine air is being built frozen backfill and the surrounding array of rocks. Numerical experiments on the calculation of layer freezing frozen backfill in underground mines. Defined while filling operations and a required strength of filling mass of air at different temperatures. It is established that in the field to create Badran ice-rock pillar with the necessary strength properties for a given period of time is the optimum thickness of 0.4-0.5 m.

Key words: ice-rock filling, two-dimensional mathematical model of heat transfer, the calculation of layer freezing, while a required strength of filling mass, the optimum thickness of the layer.

The paper deals with programmer complex allowing calculate the thermal mode and air flow distribution in an underground mine network with take into account  development of the mountain work. As example is brought calculation of the thermal mode designed diamond mine ALROSA Co. Ltd. on Nakynskoe mineral deposit.

Key words: permafrost zone, thermal conditions, software system, mines.

The article discusses technology of preparing and extracting ore above or under a single access horizon. The case record of high-capacity self-propelled drilling and haulage machinery illustrates feasibility of extraction of ore reserves reckoned among “temporarily inactive.” The authors quote expected benefits gained due to introduction of the blind orebody extraction technology. 

Key words: mineral deposits, orebody, mining system, horizon, incline, ramp, self-propelled (diesel) loading–hauling machine.

Scientific end technical aspects of electronic-ionic technologies application to fight aerosols produced by open cast mining are investigated.

Key words: open pit mining, dust control, electron-ion technology, electrostatic.

The authors studied hydrogeological regime of small rivers in East Transbaikalia and found it necessary to calculate permissible pollutants discharge standards, taking into account staging of disposal of waste waters from placer gold mines. The procedure of design flow evaluation is developed to assess water quality in rivers where mineral mining is carried out nearby. 

Key words: pollutants, waste waters, hydrological regime of small rivers, Transbaikalia.

In the work the data on technical indicators milling combines, developing the fields of cement raw materials. Results of calculation of comparative technical and economic indicators of production works in the transition Londokovskoe deposits of limestone in the development of the layer and stripe technology in compare with the traditional technology.

Key words: layer and stripe technology, career processor, cement raw materials, limestone, durability, productivity.

The state-of-the-art review of research of collectors is resulted at flotation of various types of ores color and precious metals. Researches on monomineral fractions of a pyrite, sphalerite and a gold plate with studying of collective properties again synthesized reagents, modified on a basis dithiophosphates and tiokarbamates are executed. Researches are spent with use of a differentsialno-scanning calorimetry, Ik - and Uf - spectroscopy, with measurement of regional corners of wetting, nonfoam flotation and other methods. Principles of search and use of a combination of collectors of various classes of connections are formulated. The mechanism of interaction of collectors «SGM», «Beraflot 3035» is investigated. Technological researches of medno-zinc ores Gajsky, Tarnersky and polymetallic ores of Rubtsovsk, Ozerny are executed. It is established that the collector «Beraflot 3035» is selective in relation to a pyrite and possesses high collective properties to сhalcopyrite, to a galena and sphalerite.

Key words: flotation, the collector, sorption, a mineral, flotation reagents, ore, a composition, a wetting corner, synthesis.

The analysis of interaction energy for two mineral particles of different wettability and for particle with coil of polymeric flocculant was carried out on the basis of extended DLVO theory for prediction the possibility and results of flocculation. An equation for calculation the number of macromolecules of flocculant, interacting with mineral particle, is proposed.

Key words: flocculation; extended DLVO theory; interaction energy; minerals wettability; hydrophobic interaction.

Efficiency of an additional operation in the rough bulk concentrate flotation flow-sheet has been demonstrated, i.e. flotation of intermediate products – concentrate from the scavenger copper-molybdenum flotation and tailings from cleaner flotation of froth product of the main copper-molybdenum flotation. The results of the full-scale testing of the proposed flow-sheet in comparison with the conventional flow-sheet currently used at the ore processing plant indicate that it is possible to improve the copper and molybdenum recoveries in the finishing circuit by 1-2% and 15-20%, respectively. 

Keywords: Flotation, concentrate, tailings, intermediate product, copper, molybdenum, thickener, hydrocyclone.

Preparability of oxidized ore sampled in the Vinokurovsky gold-bearing area, Urals, is studied. The article illustrates feasibility of gravity–hydrometallurgical beneficiation of ore at total gold extraction of 77.87%. The resultant gravity concentrate contains gold with mass fraction of 423.61 g/t at 68.2% gold recovery. 

Key words: gold-bearing residuum, concentration, gravity concentrate.

The authors have developed technology of sorptive cyanation of residuum in the Vinokurovsky gold-bearing area using activated carbon NORIT-335 that allows 91.33% extraction of gold to solution and 79.33% gold extraction on the sorbent. 

Key words: residuum, washability, sorptive capacity.

The bacterial leaching of sulphide cobalt-copper-nickel ore from the ore deposit Shanuch had been studied. It had been shown that semi-continuous operation mode of bioleaching under mesophilic conditions allows to extract up to 69,1% Ni, 69,2% Cо, 8,2% Cu. The technological scheme of  sulphide ore had been developed.

Key words: bacterial leaching, bioleaching, sulphide cobalt-copper-nickel ore.

In the article calculation of polluting substances, arriving in water objects with a sur-face drain from tailing territory (on Open Society example «Solnechny GOK») is resulted and actions for reduction of wastes negative influence on water ecological systems are developed.

Key words: water object, tailing, polluting substances.

The paper presents the research results of the possibility to use ultrafine grinding mill IsaMill at the stage of first recleaning concentrate regrinding and regrinding of middlings (control flotation concentrate and first recleaning tailings) instead of ball mills evidence from porphyry copper ore.

Key words: fine and ultrafine griding, mechanical impact, intensification, beads mills.

To improve the quality of shungite products intended for use as sorbents, as well as fillers in rubber, paint and other industries to use enrichment operations involving removal of fine mineral components.

In view of the research was justified flowsheet shungite including operations aero classification and acid leaching, providing the production of dispersed schungite concentrates of high quality and allows you to change the nomenclature or the performance for certain types of products. 

The results of technological tests have shown the effectiveness of the technology and schemes and showed the possibility of obtaining high-quality concentrates schungite that meets the highest standards for the mass fraction of iron, sulfur and carbonates.

Key words. Technology for processing shungite, shungite, schungite concentrate enrichment shungite, sphere of application shungite, grating, aeroclassification, fine product.

The topological method is based on the algorithm for the recovery operator (P) formula derivation. P is a function of the particular recoveries (outputs) of the separation processes. The formula derivation is carried out according to the quality-quantitative data of the technological flotation circuits. The examples of formulas application for the circuits calculation and analysis are given in the article.  

Key words: topological method, recovery operator, calculating algorithm, analysis of the flotation circuits, optimization criterions.

The author describes gold ore flotation using import collecting, depressing, activating and foaming agents. Treatment of ore with gold content of 1.6 g/t resulted in 2.45 % yield of concentrate with gold content of 59 g/t at extraction yield of 92 %. Free gold recovery efficiency using Falcon SB750 and Falcon L40 centrifugal concentrators is determined. At gravity concentration level of 565 units, gold recovery is 55–56 %. 

Key words: ore, gold, flotation, reagents, milling, classification, centrifugal force, content, extraction, concentrate, tailings.

Process of bioleaching of nickel, copper and cobalt from sulphidic cobalt-copper-nickel ore of a deposit Shanuch (Kamchatksky krai) with use of association of mesophilic and moderately thermophilic bacteria in various temperature modes is investigated. 

Key words: bioleaching, sulphidic cobalt-copper-nickel ore, acidophilic chemolitotrophic microorganisms, mesophilic bacteria, moderately thermophilic bacteria.

Indigenous acidophilic chemolitotrophic microorganisms of genera Acidithiobacillus (Acidithiobacillus ferrooxidans) and Sulfobacillus (Sulfobacillus thermosulfidooxidans) from the oxidized ore of a copper-nickel field of Shanuch (Kamchatsky krai) are isolated and mineral structure of oxidized ore is investigated.

Key words: bioleaching, oxidized ore, primary minerals, secondary minerals, acidophilic chemolitotrophic microorganisms, Acidithiobacillus  ferrooxidans, Sulfo-bacillus thermosulfidooxidans.

The article discusses and generalizes laboratory studies into development of hematite concentrate production technology using wet magnetic separation tailings of processing plant at the Mikhailovsky Mining and Processing Integrated Works. The pilot trails of various dressing schemes using the wet magnetic separation tailings are reported. 

Key words: iron ore, beneficiation, extraction, hematite, flotation, gravity concentration methods.

Organization and management of mineral material flows at mining enterprises extracting bauxite, copper pyrite, copper-nickel sulphide, uranium ores and nonmetallic rocks have been examined. Four types of mineral material flows have been distinguished and principles of the systematization have been worked out.

Key words: mineral material flows, bauxite, copper pyrite ore, copper-nickel sulphide ore, uranium ore, material flow management.

The studies of the rock mass state under the block mining conditions were undertaken at the Tashtagol deposit. The bearing pressure zones were detected in the host rock mass in the vicinity of the goaf floor. It is established that the electrometric resistance of a rock mass tends to vary in time in response to the block blasting with the different-mass explosive charges. The dynamic activity was assessed before and after the coyote blasting operations.

Key words: rocks, deposit, blast, block, shocks, dynamic events.

Conditions and character of dynamic phenomena of rock pressure on deep horizons of “Antey” deposit are considered. Regularities of parameters changing of acoustic active zones inside burst – hazard rock massif are revealed on the basis of analysis and generalization of geoacoustic monitoring data; innovative complex indicator, making possible to predict hazard dynamical phenomena 1-3- days before the begining, was proposed.

Key words: Dynamic appearerncea of rock pressure, geoacoustic monitoring, geomechanical state, acoustically active zones, criterion of burst - hazardous, prognosis.

The electrometric and electromagnetic emission methods were experimentally verified to identify hazardous zones in tectonic disturbance areas. The higher stress concentration areas and the post-dynamic-event unloading zones were found. It is established that the fault pinching periods are provoked by stoping operations. The spectral characteristics of the electromagnetic emission in the tectonic disturbance areas were obtained. 

Key words: stress, rocks, emission, electrometry, dynamic events.

The main factors influencing the efficiency of shaft building and exploitation have been considered. The necessity of more full consideration of technological factors has been mentioned. New approach to shaft strengthening projecting has been formulated. In this article, the challenge for the lining of vertical shafts under construction in difficult conditions is considered.

Key words: vertical shaft,  steel-concrete lining, shaft lining vertical shaft, cast iron-concrete lining, haft lining.

Given article is devoted to the actual theme – to increase safety of conducting mining works. Acoustic anemometers of APA series, which are using directly in mining developments to measurement of speed of an air-gas stream, should meet requirements of electrical safety provided by STATE VOLUME for the equipment of the first group. 

Key words: mine safety, coal mines, electrical-spark-safety, acoustic anemometers.

The author analyzes the approach to classifying coal seam floor rocks with relation to the floor stability. The highlighted regular patterns in distribution of types of coal seam floors allow evaluation of the floor stability by lithological types and thickness of rocks. 

Key words: seam floor, paragenetic rock complex, floor rock stability.

The article offers a new approach to mathematical modeling of enclosing rocks as a set of two models—profile and lateral. Under discussion are methods of forecasting geological-and-mining conditions of coal occurrence—morphological structure and hypsometry, small-amplitude faultiness, ash content and sulfur content. 

Key words: mathematical modeling, geological forecasting, geological-and-mining conditions, coal-enclosing rock mass.

The paper presents materials on the assessment of various parameters of screens with fixed curvilinear screening surface for dry separation of fine fractions of non-metallic waste pits using specific criteria for determining action selected by the condition of minimizing the unit cost of production of a single product classification. The result set for the specific operating conditions the optimum values of the height of the fall of hp and thickness source of material for arc screens, as well as the width of the and step screening surface propeller noise. 

Keywords: criterion of specific actions to minimize unit costs, efficiency of separation material, screening hole sieves.

We prove rationality of application of folding chisel chisels for this purpose we result a number of mathematical formulas. Have lead comparison with foreign and Russian analogues. Have resulted possible scopes of the specialized tool.

Key words: Resource, factor of quality, stability, abrasivity, fortress, resource constructive the device, shi to cut fting, cutting-shifting, cutting-chopping off-pressure, with great dispatch-chopping off.

New approach technological objects operation decision-making process on the basis of cars models that provides their highest use efficiency during a production season.

Key words: the restoration, repair, diagnostics, mathematical models, information technology.

An article describes renewal of the jaw crushers production at Uralmash. It presents basic technical solutions and design features of the modern primary jaw crushers.

Key words: jaw crushers, Uralmashplant, drobdenie.

Features of application and quality assurance of engine oils of diesel engines of mountain-transport cars in the conditions of their operation are stated. 

Key words: washing-dispergations properties, impurity, water, viscosity, drop test, the express control and express repair of engine oils.

The description of the belt return-flow magnetic separator operation for the moist magnetic enrichment, the analytical calculation of the magnetite particles movement and its joints in the separator working sector is presented. The magnetic particle movement trajectory is calculated and the differential educations system in x, y coordinates system is used.

Key words: belt countercurrent magnetic separation machines, pulp slurry under concentration.

The block-module model of CAS of control and management the rotor power-shovel of single high-powered of ERSHRD-5250 is presented, being outside term of exploitation foreseen a factory by a manufacturer. It is rotined that the block-module model of CAS of control and management is intended for a production and introduction of the automated system which will allow to take into account the various loadings on workers of drive, to process information and decide the tasks of automatic and semi-automatic control work of power-shovel of ERSHRD-5250 in the mode of excavation, and also in the mode of the technological moving. The offered block-module model of CAS of control and man-agement is developed specially for the rotor power-shovels of single high-powered of type of ERSHRD-5250, in connection with their past term of exploitation.

Key words: control, management, excavator, system, load.

In article are considered a way of prolongation of service life of the fans working on mines and mines of the Russian Federation. The example of practical experience of the given work is resulted In article are considered a way of prolongation of service life of the fans working on mines and mines of the Russian Federation. The example of practical experience of the given work is resulted.

Key words: axial fans, industrial safety, useful life, fan upgrading.

On the basis  method of the distributed features with use break schemes shovels a flow the driving wheel of the fan and specified Prandtl hypothesis are received the equations for calculation of power characteristics whirlwind-sourses and geometrical parametres of the vortical chamber providing elimination break of vortex formation. Essential increase efficiency is experimentally proved. The fan with vortical chambers in shovels of driving wheels that allows to solve an actual problem of increase in economic efficiency of mine ventilating systems.

Key words: whirlwind-sourses, the fan, power characteristics, distributed features method. Prandtl hypothesis.

The author reviews hands-on experience and scientific research and development in Russia and abroad, concerned with mine methane and sorptive and gas-kinetic properties of coal. The new mineral coal–gas system test data processing procedure has been developed.

Key words: mine methane, coal and gas outbursts, methane-bearing coal deposits.

Dependence of aerodinamic resistance of dust sediment on filter vs dust mass was investigated. Influence of dust size on aerodynamic resistance sediment was shown. The error of dust mass concentration measurement was estimated.

Key words: dust concentration, depremometrichesky measurement method.

The review of modern technologies of extraction of water from lunar soil is carried out. It is shown that water extraction from lunar soil technically feasible, but de-mands considerable expenses. Results of researches of the Scientific and educational center "Innovative Mountain Technologies" at the Moscow State Mining University, which testify to possibility of effective production of water from lunar soil on the basis of magnetic-pulse technology. The mass of the developed technological module is 9.45 times less, productivity on processed soil is 1.25 times more, and on an exit of water is 3.75 times more than at analog of NASA RASSOR Excavator.

Key words: mineral mining, space, magnetic-pulse treatment, water production, Moon.

In the given work technologies of conducting dismantling works on the advanced foreign and domestic mines are considered.

Key words: coal mines, demolition, dismantling the camera.

Recommended sequence of the validation of mining and geological information (together geological data). 

Key words: accuracy, organization, subsoil, geozamer.

Oxygen phase of emulsion explosives contains solid ammonium nitrate nuclei 10–30 nanometers in size, parted by finest water films. This fact allows assuming emulsion explosives specifically structured high-concentration nanosuspensions, which is to be duly considered and included in physico-mathematical modeling of shock initiation in this type of explosives.

Key words: emulsion explosives, nanosuspensions

In the present article questions of integration of the industrial enterprises in the conditions of crisis are considered, possibilities and the basic ways of association are analysed. Necessity of consolidation of efforts of the enterprises for astable crisis conditions is underlined.

Key words: integration, trends of integration, crisis, interest, central planning, possibilities.

The article has information about the particularities of the management of efficiency of manufacture of the mining mechanical engineering. There is example about activity one of the most important factories. Author offers many supplies for development of the process of the management at the factory.

Key words: the mining mechanical engineering, management, factory, efficiency, commercial raid.

All the basic methods of state regulation of holdings activity have been researched. The analyze of foreign experience of introduction in the tax law system of consolidated taxation have been given. The recommendations on improvement of Russian legislation of holding companies activity regulation have been developed.

Key words: Holding, vertical integration, the system of consolidated taxation.

The article focuses on basic agrochemical properties of soils of natural landscapes in the forest-steppe zone in Kuzbass where intensive mining of black coal is in progress. Based on these properties, ecological state and ecological indexes of the soils are characterized and estimated. Based on the obtained results, it is possible to define the ecological impact on the soil covering under mining at the present time and the agricultural load in times past. 

Key words: mining-created landscape, nature-and-industry complexes, ecological as-sessment of soil, ecological index of soil.

The technique of monitoring of a condition of waste products of drilling is developed by a complex of modern analytical methods: x-ray spectrometry method of the analysis, powder x-ray diffractometry, optical and electronic microscopy.

Key words: the waste products of drilling, the ecological danger, the modern analytical methods.

The expediency of decrease in the installed power drive the synchronous motor of a tumbling mill with 2,5 to 2 MW is proved. For improvement of quality of starting modes program control by the inductor and regulation of discharge resistance are offered.

Key words: electric drive, synchronous motor, start, excitation system, discharge resistance.

Article is devoted to the problem of improving the quality of mining anemometry metrological support. Affairs of improvement of compact aerometric plant by the CDF simulation are considered.

Key words: aerometric facility, mine anemometry, calibration of anemometers, finite element method, computational gas-dynamics, mining safety.

Article is devoted to the problem of improving the quality of mining anemometry metrological support. Affairs of simulating the calibration curve of acoustic anemometer and obtaining analytical dependence, describing this curve are considered in the article.

Key words: aerometric facility, mine anemometry, calibration of anemometers, finite element method, computational gas-dynamics, mining safety.

There is a strict theoretical foundation built  to describe the method of spontaneous polarization, specifically:  the mathematical model - in the form of the Lagrangian density - of the study object, which is a porous, permeable geophysical medium filled with fluid. Constructed Lagrangian density function leads to the system of partial differential equations, that combined with corresponding boundary conditions, describe the process of generating electric field in the method of spontaneous polarization. Numerical simulation is carried out by bringing corresponding boundary value problem for a model system of  partial differential equations to a system of Fredholm integral equations  that later are solved by method of averaging functional amendments.

Key words: spontaneous polarization, Lagrangian, mathematical model, numerical simulation.

The paper presents a mathematical model taking into account the impact of the gas pressure in the anisotropic rock mass, which is implemented on the basis of a set of problem-oriented program based on the concept of synthesis of a mathematical model of a piecewise-homogeneous rock mass of the blocks.

Key words: Mathematical model, rock massif, structural block, coal stratum, adjacent strata, geologic fault, finite difference method, elastic boundary value problem, synthesis, gravitation, anisotropy, gas.

The concerns of the current state of higher education in Germany and the problems arisen because of the transition to a two-tier system of training are addressed. A review of the various programs of mining study is given. A brief characteristic of universities is shown that train mining specialists and statistics data.

Key words: mining education, bologna process, diplomingenering, master, bachelor.

The paper presents the results of research on the problem of obtaining permanent mag-nets made of alloys of Fe-Cr-Co, obtained by quenching from the liquid state. The regularities of structure formation during rapid quenching from the liquid state during the subsequent crystallization annealing, and magnetic properties of the formation in the tapes rapidly quenched alloys of Fe-Cr-Co were studied. It is shown that the crystallization from an amorphous state at temperatures above 570 ° C together with the α-phase allocated first σ, and then γ-phase. Conducted heat treatment of alloys for high-coercivity condition on modes according to State Standards 24897-81 (GOST). Measurement of magnetic properties after heat treatment allows us to conclude that the application of a magnetic field during crystallization from an amorphous state to a crystalline texture affects the alloys which, in turn, creates the potential for creation of manufacturing techniques of permanent magnets and rapidly quenched ribbons pow-ders by crystallization from an amorphous state.

Key words: permanent magnets, quenching, crystallization method.

This research paper describes the basic principles of the client part of online ticket sales. The catch is an important defense system against nesanktsianirovannogo connect third-party site.

Key words: online, tickets, sales, defense, system.

Develop databases to support computer park MSMU platform Microsoft System Center. So called my bachelor's qualifying work. Now it's time to upgrade the project. Modernization does not touch the platform Microsoft System Center, and its technical support. It is necessary to ensure high reliability and availability of the platform. Additionally important is the economic factor. Using virtualization technology will save lot of money, time and human resources.

Key words: platform, Microsoft System Center, technical support, computer park.

The article contains a brief analytical review of the regulatory framework ensuring the safety of dams in some countries and the features of current safety management system of hydraulic engineering structures in Russia. The problem of increasing the level of safety of hydraulic engineering structures by creating a system for remote control of stability, which provides timely definition the factor of stability and taking control solutions to ensure the safety hydraulic engineering structures is presented.

Key words: the regulatory framework, safety management system of hydraulic engi-neering structures, level of safety, remote control.

Demonstrated the effectiveness of multiple-use tools for stone processing plants. 

Key words: multirope machines, efficiency, productivity

In this article proposed drainage design based on polymer fiber material designed to reduce the water content of soil in the construction of the underground artificial structures.

Key words: layer drainage, artificial constructions, ground recess, underground tunnel.

The summary In modern conditions of the astable market economy, one of the major problems of the managing director maintenance of constant and steady functioning of the enterprise is. To reach this purpose on a long time interval it is impossible without drawing up and realization of competent financial strategy.

Key words: financial strategy, business competition, forecasting methods.

The article presents the results of the practical test filtration systems on the basis of the fibrous polymeric materials. We find the most effective combination of filters, the estimation of their work for the treatment of industrial waste water mines.

Key words: industrial waste water, filtering devices, fibrous polymeric material.

All the usage period long, subsoil users never set about the mined-land reclamation for the environment-oriented activity requires high investments. Currently existing land reclamation procedures fail to effect quality and timeliness reclamation of disturbed lands. The article discusses a reclamation financing scenario where it is suggested to establish a regional target financing fund as the financial guaran-tee of enforcement of mined-land reclamation in a big way.

Key words: land reclamation, subsoil use, opencast and underground coal mines.

A new diagram of the deployment of virtualization solutions developed earlier.

Key words: deployment diagram, virtualization.

The paper presents a study of the most commonly used dependencies to determine the optimal size of the grinding ball. On the basis of comparative analysis is formulated conclusion that obtained on the basis of their results are significantly different from each other. Having as a basis for determining the adequacy the information considered methods of pilot testing the efficiency of the grinding balls of different sizes, obtained by calculation on the studied formulas, it was con-cluded that the presence of the adequacy of the greatest depending proposed Razumov.

Further, it was noted that none of the methods as a factor influencing the need for the effective size of the ball, is not the hardness of the material being processed, while its mechanical properties directly affected by the required amount of kinetic energy of impact, is inextricably linked with the mass and size of the ball .

Key words: grinding, the optimal size of the ball, grinding ball, hardness, adequacy, relation.

The article, based on an processed analysis of known relations to determine the optimal size of the grinding ball, made a number of abstracts. In particular, it is ar-gued that the considered relations are not fully take into account all the factors that exist while the calculation of the effective size of the grinding medium, which does not let call available depending adequate. Further, it is noted that such a criterion, like the hardness of the grinded material, which has a direct impact on the effective size of the mill ball does not enter into any relation, thereby making all the calculations on them unrepresentative.

However, the proposed formation of a special adjustment coefficient reflects the im-pact of the most significant factors that were not previously taken into account.

As a result, it is proposed to introduce into the Razumov formula as a most appropriate, the correction coefficient, which reflects the ratio of the hardness of the mill ball material to the hardness of the material being grinded.

Keywords: grinding, the optimal size of the ball, grinding ball, hardness, adequacy, relation, correction, the adjustment coefficient, estimation.

In the article resulted taking in features of the experimental stand are provided in article on research of efficiency of vibrocutting of coal of small durability. It is specified that for various working bodies of different designs can be applied to various physicomechanical properties of breed. In the article resulted taking in article concerning scopes of a method of vibration influence at production and enrichment of rocks. It is specified that for efficiency of vibrodestruction it is necessary to consider concrete parameters of cutting, such as the giving speed, the section area cut.

Key words: еxperimental stand, coal, cutting, working body, vibration, power inputs, vibration, breed, cutting, working body, capacity.

This article is devoted to the analysis of flows into the economic system – large holding company with separate head enterprise (as an example group of enterprisers CJSC «Stroyservis». 

Key words: financial flow, goods flow, economic system, group of enterprisers 

Given the technological rationale for the use of mobile water jet combines a variety of geological and mining conditions, examine the technical requirements, scope, purpose and economic performance indicators analyzed all factors improve performance of hydraulic fracture of coal and as a consequence of increasing the burden on the working face when using the mobile water jet harvesters.

Key words: Hydromonitor, hydraulic demolition, aggregate, coal seam, the flowsheet.