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The resource-saving technology is proposed for mining watered lignite deposits in the Kansk-Achinsk basin without drying of productive strata. The expediency of accumulation of all water inflows in mined-out area of the open-pit mine for the subsequent use in the closed production cycle is substantiated. Effectiveness of hydromechanization in selective stripping of incompetent overburden rocks with solid inclusions is determined. Parameters of a hydraulic fill placed in the mined-out area of the open pit are presented.

Slope stability is “the heart” of open pit mining operations. Pit slope monitoring is an important undertaking requiring collection of structural data for geotechnical characterization and stability analysis. Challenges exist with conventional field data collection methods including time, safety, and data accuracy and reliability. In this paper, 3D laser scanning, photogrammetry and Split FX are integrated to investigate open pit slopes in highly geologically altered materials using a case study from the Melbur Pit slopes in Cornwall, United Kingdom. A 3D laser scanner is applied to scan structures from the slope face and to create a 3D point cloud database. Photogrammetry is applied to capture images for processing. 3D images are draped onto the point cloud to give a visual representation of the slope face. The kinematic analysis indicates that the integrated approach enhances the identification of structural discontinuity sets and their orientations. An integration of emerging digital technologies thus provides a comprehensive and reasonably reliable structural database for slope stability analysis during open pit mining.

The procedure is developed for modification of diamond surface by luminophore-containing organic compositions. The compositions are composed of an organic luminophore-anthracene, inorganic luminophore K-35 and cetane. Indication compositions are synthesized based on the selected luminophores and organic liquids and tested using pilot separator POLYUS-M. Spectral-kinetic characteristic of luminophopre-containing organic-mineral compositions, treated weakly luminous diamond crystals and kimberlite minerals are determined. The compositions ensuring better spectral-kinetic characteristics and higher extraction of diamonds during H-ray luminescence separation are selected.

The operating and promising apatite deposits in the Murmansk Regions, holding 70% of Russia’s phosphate ore reserves being unique feedstock for the production of mineral fertilizers are reviewed. The causes of reduction in P₂O₅ content of produced ore, which lead to higher cost of concentrate production and to increased volume of waste, are shown. It is found that it is efficient to stabilize the processing feed through preconcentration of apatite ore by means of coarse X-ray luminescence separation that elevates P₂O₅ content of process flow owing to removal to 20% of material with P₂O₅ content to 2%. The semi-commercial tests reveal destabilizing factors which lower the separation circuit efficiency. Elimination of these factors by adjusting velocity and motion path of coarse ore between the zones of measurement and separation allows minimization of useful mineral loss in waste by more than 2 times, which improves selectivity of X-ray luminescence separation and increases extraction of P₂O₅ in concentrate.

The process of fluid mass transfer and formation of concentration zones on evaporation barrier in rock mass are studied. A series of experiments is carried out on a special testing plant in order to examine the process of settling-down on evaporation barrier and to determine parameters of vertical zonality in settling-down of simple and complex water-soluble nonferrous metal salts. The experimentation procedure is described. The regular patterns are found in the change in content in the direction toward the surface across the whole zone of aeration from the groundwater table. The higher salt concentration is observed on the rock mass surface, in the upper salt crust. This distribution law is typical either of simple or complex salts. The main parameters of settling kinetics and evaporation rate on the barrier are revealed and evaluated.

The process of wet magnetic separation of oxidized ore from the deposit of Abail, Republic of Kazakhstan, is studied. Kinetics of roasted product milling is analyzed, and the optimal size is recommended for the fist stage of milling as -0.071 mm at the content of 55-60%. The accomplished magnetic analysis of different size products shows that the decrease in size causes no increment of iron in the magnetic product and iron is at the level of 63.0 mass%. The scanning electron microscopy reveals that the roasted and magnetic products contain floccules of gangue and magnetite particles which ass into magnetic fraction and worsen its quality. Two schemes are proposed for decomposition of floccules: multistage desliming with regard to sedimentation velocity in liquid medium and attrition with deffloculation agent. It is recommended to apply two two-stage circuit with milling, desliming and wet magnetic separation, which allows production of iron concentrate with iron content of 67% at recovery of 76.5%.

The results of the mineralogical examination if of old sulphide and oxidized gold ore tailings of a mining and processing plant in the Krasnoyarsk Territory are presented. Secondary mineral forms of antimony, namely, antimony bloom Sb₂O₃ and tripuhyite FeSBO₄, as well as iron are found. Gypsum in the waste is a newly formed phase, undetected in the initial ore, revealed in sulphide and mixed ore tailings and is absent in oxidized ore tailings. The key valuable component is gold represented by fine accretions in arsenopyrite, free gold size is not more than a few first microns.

Modeling of heat exchange processes in water-saturated rock mass during shafting with artificial freezing is performed. The problem of adjusting thermophysical properties of rock layers by the experimental measurements of temperature in the check thermal wells spaced from the freezing perimeter is analyzed. In terms of the abuilding shafts at Nezhinsky Mining and Processing Plant, significance of adjusting the the thermophysial parameters borrowed from the geological engineering survey data is illustrated. The number of independent adjustment parameters is determined from the analysis of the system of equations in two-dimensional two-phase Stefan problem in the dimensionless form. An inverse Stefan problem is formulated for a horizontal layer of rocks. The numerical algorithm is proposed for the inverse Stefan problem solution based on the gradient descent method. The algorithm minimizes functional of discrepancies between the model and measurement temperatures at the locations of the check wells. The functional of discrepancies in the phase space of the thermophysical properties and the algorithm convergence are analyzed.

A review of various real time temperature devices available for use in underground coal mines in Queensland was conducted. To investigate the fit-for-purpose of the intrinsically safe (IS) instrument, laboratory experiments were performed. The obtained results were compared to the calibrated reference instrument readings and sling psychrometer data under variation in air flow velocity, moisture content and dust content.

Introduction. The purpose of the paper is to identify axiological contradictions between the conceptual organic metaphor of education and the conceptual metaphor of «consumer demand in education» (D. L. Konstantinovsky, V. S. Vakhshtayn, D. Yu. Kurakin). The conceptual metaphor is understood as a cognitive operation, which determines the style of thinking about a subject under study (J. Lakoff, M. Johnson, J. Vervaeke, J. M. Kennedy, M. McGlone, N. А. Ilyukhina, S. А. Pankratova, S. А. Khakhalova). The author of the paper proceeds from the proposition that sociocultural-interpretative conceptual metaphors (G. S. Baranov) have the potential to influence decision making process in the development of educational system reforms, to significantly determine the way they are implemented and the response of the expert community and citizens to the implemented reforms. Methodology and methods of the research. In the course of the study, a content analysis of the main regulatory document that normalizes and regulates the structure of the education system and the relationship between its subjects, the Federal Law of the Russian Federation «On Education in the Russian Federation» of December 29, 2012 o. 273-FL was used, as well as the method of metaphorical modeling to reconstruct conceptual metaphors that guided the legislators and axiological approach to identify the basic values for each of these metaphors. The results of the research. The author reveals the existence of a contradiction already at the normative level, on the material of the Federal Law «On Education in the Russian Federation». It seems that in the first place this contradiction causes damage to the upbringing potential of national education. Education, understood as a service sector, cannot perform an upbringing function along with a training one, since it cannot appeal to the Motherland, patriotism, and other cultural-specific values of the organic metaphor as the supreme ones. The main values of education from the point of view of the economy centered logic of the «consumer inquiry» metaphor are profit, payback and efficiency. Conclusion. The author comes to the conclusion that only the philosophy of education as an analytical tool can resolve the contradiction between two metaphors at the axiological level.