The article discusses the development of novel geotechnologies and coalface systems with powered roof support providing the regulated area top coal caving for thick flat and inclined coal seams. The newly-developed methods and equipment for coal seam gas content assessment in underground conditions are listed, which are helpful for decision-making on gas drainage measures, as well as methods and equipment for intensification of in-seam gas drainage and utilization of coalbed methane. The description is provided of newly-developed software suites for modeling of emergency situations in underground coal mines. The article also contains a brief description of methods and procedures of diagnostics technologies for potentially dangerous equipment, test programs and restoration of the overhaul period of equipment and tools. The overview of studies aimed at the development of energy-efficient industrial heat exchangers is given

While resources in other mining countries, such as Canada and South Africa, are entering the later stages of their exploitation, Peru is just getting started and upgrading strategies taken to support the growth of the mining equipment sector today, can help to generate benefits for the country in the future. Upgrading in the mining equipment sector can help Peru to increase the benefits derived from its natural resources, improving mining operation efficiency. To date, Peru has demonstrated success in two key areas – underground mining and mineral processing as a result of its particular geological conditions. Peruvian companies thus need to explore opportunities to leverage the skills developed to date in the mining equipment sector to enter into the agricultural, fishery and potentially, oil and gas sectors

The article deals with the problems of methane sudden outburst prevention in coal mines. The authors present the analysis of research methods and propose the conception of electron-wave theory of methane sudden outbursts. The source of all physical-chemical processes is electron-wave activation of thermal energy in a coal bed sealed from atmospheric air at the stage of coalification. The idea is in the fact that two conditions are required for sudden outbursts: the presence of numerous pendant groups of macromolecules for gas formation and thermal energy for macromolecule decomposition. The authors state that geological conditions are facies of peat accumulation alkali genesis, while thermal energy is stimulated by macromolecule atoms in conditions of abnormal increase of rock pressure ahead of the exposed surface of coal faces.

The article discusses a very important issue for grinding processes of mineral processing and construction enterprises – minimization of drum mills downtime in case of relining. Relining is a labour and cost intensive, as well as unsafe job. Today, all production companies aim at the minimization of costs, greater efficiency and higher equipment utilization factor. The solution proposed by the author met a keen interest in many companies. Customized solutions have been presented, 3D modeling of machinery configuration has been performed: articulated crane + articulated crane, and manipulator + articulated crane, modular articulated crane + rope crane + articulated crane mini, which descriptions can be found in the previous issues of the GP Journal. Flexibility of relining systems allows minimization of wear plates replacement time and improvement of personnel safety in specified conditions of a particular company in confined service area of mills.

The authors analyze the evolution of the world industrial revolutions (societies). The article proves the idea that Society 5.0 covers the period of the total computerization and development of technologies, which have determined the development of the industry and production sector of developed economies. This period is characterized by the optimization of resources consumption per capita on an average. Society 5.0 is a stage following the information society, and it extends Industry 4.0 Program beyond the production sector. The strategy of Society 5.0 is a superintelligent society, which implies the optimization of resources consumption of the society rather than that of an individual. Industry 4.0 Program is a part of Society 5.0, therefore these concepts are inseparable, but within the framework of Society 5.0 we deal with cyber physical technologies.

The behavior of gold output during the War years is analyzed on the basis of historical research and many other documents. The estimates are provided of the gold output as an instrument of payment for lend-lease supplies during the Second World War. The heroic labour of the USSR gold mining industry personnel, particularly workers of the Dalstroy system, is described. A preliminary analysis of the USSR – US international relations in the cold war early years and evaluation of the USSR gold holdings have been made in this context.

In the situation of continuous deterioration of geological, mining, natural, environmental and social conditions the enhancement of economic efficiency and safety of mineral deposit development by surface mining methods requires new philosophy of planning and design of mining engineering systems on the basis of novel surface geotechnologies and dictates the necessity of refinement of the regulatory framework governing safe and efficient mineral mining. By the Decision of the Federal Environmental, Industrial and Nuclear Supervision Service of Russia (Rostekhnadzor) the coordination of work on the elaboration of federal norms and rules in the area of industrial safety «Rules of providing the stability of pitwalls and benches of quarries, opencast mines and spoil dumps» was tasked to N.V. Melnikov Research Institute of Comprehensive Exploitation of Mineral Resources of the Russian Academy of Sciences.

The authors present the results of modeling of stress-strain behavior of the adjacent virgin rock and pit deposits with dirt partings

Radioactive wastes have become an important problem of our time. At the dawn of nuclear power engineering very few people pondered over the necessity of spent material storage, while today this task is extremely important. Therefore, the pressing need arises for developing a process to convert the radioactive wastes into inert materials, which will not be able to interact with the environment.

Based on the generalized experience of research into mineral mining and processing technology-related formations (tailings storage facilities) and studies personally performed in different years the authors describe the philosophy of the deposit development planning and design. High-priority tasks of technology-related deposit commercial development include such aspects as investigation of tailings storage facilities as perspective mining sites and obtaining of the reliable information on tailings storage facility depth and area variation of valuable component concentrations, and first of all, data required for the evaluation of the structure and properties of massifs, zoning of mineral forms and aggregates as a basis for the technology of such deposits development. Such sites are the most difficult-to-develop deposits.