The monograph outlines the main provisions of the multiphase and multizone theory of technological crushing of rocks by explosion in quarries. Developed scheme of crushing process separation into multiple phases is presented. Within the framework of this scheme, models of each phase have been developed taking into account the symmetry of their development, mining and geological and technological factors, as well as taking into account the interaction of charges during their group blasting. An analytical description of the phases, developed computer programs and the direction of using the developed theory in mining technologies is presented.