microvoladuras 29
Microexplosions are small piercings practiced in the rocky terrain in order to push it. These holes, in order to overcome resistance and rock hardness, are carried out with blasting from the ground, but as small arriving not to drill, but crack, creating cracks. As they are minimal, they receive the cult micro-prefix, 'small'. These microexplosions are carried to term with a minimum load of dynamite.