Abstract: The method of breaking rock by blasting comprises drilling of boreholes, loading of a blasting charge with a means of initiation therein and stemming. The stemming is made up of a phlegmatized low-velocity explosive.

Abstract: The proposed statistical analyzer comprises a converter of physical quantities to voltage, connected to direct inputs of comparators whose number corresponds to that of voltage quantization levels. The analyzer also includes adders. One input of each adder is connected to the output of a standard voltage generator; the output of each adder is connected to the inverting input of a comparator. The output of each comparator is connected to the second input of each adder corresponding to a quantization level which is one level below the quantization level corresponding to this comparator. The statistical analyzer of this invention is marked by a high accuracy and reliability and makes it possible to obtain a bar chart of any working process parameter of a machine.