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The structure and the digital model of the mining face of coal mine are presented. The digital model contains the parameters of the coal bed, the technical parameters of the used mining machinery, and the economical indicators. The digital model can be applied to support decision-making in increasing the productivity of the mining fact of the coal mine, to estimate the effect of use of new machines or technologies. An example is presented in which the digital model is applied to determine the dependence of the financial indicators of operation of mining face on the wall length and technological schemes of coal extraction. [ABSTRACT FROM AUTHOR]