Abstract: A novel heterogeneous, cap-sensitive high explosive is provided which comprises a crystalline inorganic nitrate salt having dispersed throughout the matrix of the salt crystal a hydroxyalkyl nitrate fuel. Particularly preferred are ammonium nitrate crystals having dispersed therein ethylene glycol mononitrate. The crystalline high explosive is dry and free flowing and may be used per se, in admixture with bulking agents or fluidizing agents or may be used as a replacement for a substantial amount of nitroglycerine in conventional dynamite compositions.