A document, among others, stating the explosive nature of Zyklon
The American Fritz Berg maintains that there is no document stating that Zyklon is explosive. He is wrong, as proved by the document NI-9912 (“NI” stands for “Nuremberg Industrialists”). This document from the Nuremberg trials archives bears the title “Richtlinien für die Anwendung von Blausäure (Zyklon) zur Ungeziefervertilgung (Entwesung)”, i.e. “Guidelines for the use of prussic acid (Zyklon) for exterminating vermin (disinfestation)”. It was registered by the Allies on August 21, 1947.