The introduction of modern integrated mechanization into the practice of coal mining places high demands on the detail and reliability of forecasting of mining and geological conditions and complicating factors. Such factors at the Vorkutskoye and Vorgashorskoye coal fields include, first of all, small-amplitude faults in coal seams with displacement of less than 10 m, which, due to their parameters, are not established during exploration works, so their intersection by preparatory and extraction mine workings proves to be in one way or another unexpected. ...