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Item Minimization of Environment Pollution from Coal Trains (dissertation)(Dnipro National University of Railway Transport named after Academician V. Lazaryan, 2020) Oladipo, Mutiu OlatoyeENG: The dissertation is devoted to the development of methods for minimizing the level of environmental pollution from dust pollution during coal transportation by rail. The transportation of coal from its production sites is carried out in coal wagons. In this case intensive environment pollution takes place. The analysis of modern methods of minimizing environmental pollution caused by coal dust showed that they require quite high costs, the use of additional equipment at stations of loading (unloading) of coal, much time for implementation. Analysis of scientific publications has shown the need to create effective and low cost methods of environment protection from pollution during the transportation of coal by rail. It is known that the intensity of dust pollution during coal transportation depends on many factors, the most important of which is the speed of the air near the surface of the cargo (local air flow speed). Therefore, to reduce the intensity of coal dust emission from the wagon, in this dissertation, some tools were selected that reduce the value of the local air flow speed near the surface of the coal. For this purpose it is offered to use special additional boards on the coal wagon and screens. In this dissertation on the basis of experimental and theoretical researches it is shown that application of additional boards of the special form ("vertical wall", "wing", "internal wing") and screens reduces coal dust removal from a wagon. On the basis of the performed experiments the regularities of dust zones formation on the underlying surface, both for coal wagon without and with additional boards or screens, were established. To determine the effectiveness of special boards, the screen application on the coal wagon a set of numerical models was developed. The models allow to predict air pollution in the case of coal transportation in wagons and when effectiveness of proposed means of environment protection. Modeling of dust air pollution during coal transportation in wagon is carried out on the basis of multidimensional differential mass transfer equations. Modeling of pollution process on the basis of these equations allows to obtain information about the formation of the coal dust concentration field in the whole study area, and not only at some point in the environment. The developed models allow to predict the level of atmosphere dust pollution taking with account of physical factors which were not previously taken into account in research works in this field, namely: geometric shape of additional boards, air flow speed near the cargo surface, coal dust emission rate, coal dust diffusion, wagon speed. It was shown that use of air curtain at the coal wagon allows to reduce dust pollution of environment during coal transportation. The practical value of the work is that the proposed methods of environment protection during the coal transportation require low economic costs for implementation. The manufacture of additional boards and screens can be performed using standard industrial equipment. The implementation of the proposed methods of protection does not require the installation of special equipment at loading stations (places of unloading), and does not require special retraining of workers. The effectiveness of the proposed methods of protection against environment dust pollution does not depend on climatic conditions. The developed numerical models allow to predict quickly the concentration of coal dust in the air, taking into account the main physical factors influencing the process of dust pollution. These models make it possible to reduce the share of physical experiment during research study in this scientific field. The experimental results obtained were compared with the theoretical ones obtained on the basis of the developed numerical models. The developed numerical models were also verified. Developed numerical models and methods of environmental protection are used in firm "Energoservice-KR" to develop technology to protect air from pollution during transportation of iron ore and coal, as well as in the educational process of the Dnipro National University of Railway Transport named after Academician V. Lazaryan.