[1] Miedziankit was developed by Polish chemist Stanisław Ignacy Łaszczyński [pl] and patented by him in 1909.
[2] It was widely used in Germany, Poland, and Russia in the years around World War I, when nitrate-based explosives were needed for the war effort.
[1] It is a Sprengel explosive and can be prepared just before use by soaking chlorate cartridges in kerosene.
Alternatively, it can be mixed at the factory, using kerosene with a high enough flash point (above 30 °C) to make the explosive safe for transport.
[1] When pressed in an iron tube to a density of 1.7 g/cm3, Miedziankit has a detonation velocity of 3000 m/s.