Norov Yunus Dzhumaevich and Mehmonov Maksud Rabbonokul ugli 2020. Development of a mathematical model for calculating the process of crushing hard rocks by explosions of cylindrical charges of explosives. Middle European Scientific Bulletin. 5, (Oct. 2020), 30-32. DOI:https://doi.org/10.47494/mesb.2020.5.51.