I am sure most collectors of German mines know the German non metallic Topf mine A 4531 came with a bag of sand that was radioactive called tarnsand. This bag of sand was laid down or the sand sprinkled over the mine so it could be detected for reuse or cleared using a special detector a Stuttgart 43 that was basically a geiger counter. I believe this was only found out after the war when major mine clearing took place in Europe. Anyone know what the bag looked like, any pictures. Did the Topfmine mine come in a wooded type crate like the Tmi 42 and 43.
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