This paper has studied the technological process for preparation of grain potassium picrate (PK), which can meet the requirements of production in batches.
The lines of workers, mainly women, mixed two chemicals together – dinitrophenol (DNP) and picric acid – to make the TNT explosive, before packing it into metre-long artillery shells and soldering them shut.
及排
方法。
粒状
一
——二
（DNP）和
