The Chemistry of Powder and Explosives - Sciencemadness Dot Org

OTHER PROPELLENT EXPLOSIVES 51
together in water, running the solution in a thin stream onto a
rotating and heated steel drum whereby the water was evaporated,
and scraping the finished powder off from the other side
of the drum. It was cheap, and easy and safe to make, but was
hygroscopic. For use in mining, it was sold in waterproof paper
cartridges.
Poudre Brugere was made by grinding together 54 parts of
ammonium picrate and 46 parts of potassium nitrate in a black
powder wheel mill, and pressing and granulating, etc., as in the
manufacture of black powder. The hard grains were stable and
non-hygroscopic. The powder was used at one time in military
weapons. It was more powerful than black powder and gave less
smoke.