In the course of the research projects of the Department of Process Engineering of the University of Miskolc the empirical breakage functions of several crushers (jaw, gyratory, cone and hammer crushers) were determined by measurements under operating or pilot-plant (laboratory) conditions. A method was developed to optimize the crushing technology. An appropriate computer algorithm was developed by the Department of Mining and Geotechnique of the University of Miskolc for the elaboration and optimization of the blasting technology. This made it possible to prepare a computer program for use in stone-quarry complete technologies which facilitates the joint examination and optimization of the two tasks. A successful proposal was elaborated for the transformation of the blasting and crushing-screening technology in the lime pit of HCM and OEA (Hungary), the success of which was proved by the application of the program.