Selected aspects of undercover production of explosives and explosive devices in 1939-1945

In this paper are presented: a) contemporary limitations in research opportunities, b) raw material sources and technological background, c) human resources, d) organization of production, e) locations of manufacturing facilities (armouries), f) diversification of explosive devices and explosives applied in their underground production, as well as support from abroad, g) production quality and research capabilities, h) contemporary forms of commemoration of people and places associated with the clandestine production of explosives and explosive devices in occupied Poland during the Second World War. The purpose of the analysis is to show how big and diverse was this activity, as well as, the importantance of this topic in our times.