FIELD: mining industry. SUBSTANCE: method and device for blasting by means of plasma has capacitor bank for accumulation of electric charge. Connected to capacitor bank is inductor. Delivered through inductor is electric discharge in the form of current which passed through commutator to blasting conductor which constitutes section of probe. Blasting conductor is made in the form of band-type spiral wound on cylindrical core. Band of spiral has determined relation of length to cross-section value which is proportional to square root from ratio of inductance to capacitance so as to ensure effective dissipation of optimal amount of electric energy accumulated in capacitor. Application of aforesaid method and device allows for raising efficiency in crushing or rock matter. EFFECT: higher efficiency. 9 cl, 32 dwg, 1 tbl
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