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The article discusses various methods of rock mining used in open-pit mining.The used machines were presented and attention was paid to the scope of their application and the limitations that they are subject to when mining various types of minerals. Then, the author's method for determining resistance to the mining of undisturbed soil was presented along with an example of application. On the basis of studies on the properties of the undisturbed soil carried out in one of the Polish open-pit mines, the technical ...