Since the mid 1960's in domestic and foreign practice begins to develop and improve a new progressive direction of open pit and underground mining, which is based on the contour explosion of borehole or borehole explosive charges.
When carrying out special works on directional destruction of rocks (contour blasting, creation of extended fracture planes) to regulate the impact on the massif there is a need to use industrial explosives with a wide enough range of energetic, technological and physical-mechanical properties.
Применение зарядов ВВ направленного действия для контурного взрывания и предварительного щелеобразования в массиве горных пород в последние годы привлекает внимание многих исследователей ...
