Experimental results for nanosecond electromagnetic impulses (NEMI) impact on precious metals leaching process from sulphidic ores are presented. A possibility of an intensification of leaching process of Au, Ag, Cu is established. The extraction of silver increases by 70 %, gold – by 40 %. The samples of sulphidic ores from the pit of JSC NPF "Bashkir gold mining company" are taken as objects of research. The use of economic electronic generators is suggested herein. They create impulses of 1 nanosecond, the front of 0.1 nanoseconds, amplitude of 6-15 kV impulses, 1 kHz frequency of repetition, consumed power from an electric network is less than 100 W. Energy in one impulse is 10–3 J. The pulse field changes the valence of metals of impurity towards decrease. It changes the current of chemical reactions in a mineral matrix. The local heating of the precious metals interspersed particles and destruction of a mineral matrix are also possible.

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