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The article discusses the operation of pyrotechnic compositions in electric and nonelectric detonators. Laboratory methods for testing pyrotechnic compositions used to assess their flammability properties and to determine the potential for use as delaying masses in mining detonators are presented. Research on burning pyrotechnic compositions in bulk and compacted state has been discussed. The methodology of individual experiments, their goals and variants has been presented. Results anddoi:10.22211/matwys/0180 fatcat:ks4a3i4nzbegpcwvslsx4n2cui