Audibert tube

Attrappen = mock explosives 218 Audibert tube 22 249 Auflegerladung = mud cap 3 43 220 Aunt Jemima = 80% fine ground HMX (- Octogen) and 20% plain, old flour. It served for camouflage storage of sabotage explosive in World War II. 

Among other methods (e.g., Ruhr test, ISO 8264 [54]), the Audibert-Amu dilatation test (ISO 349 [55]) is commonly used. A sample of coal is compressed in a vertical tube and slowly heated (3-5K/min) while a plunger rests on the surface. 

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