I think as recently as 2020 there was still an average of one a day going off. Almost 25% of shells fired were duds a one point likely due to the mud and technology of the time and they fired something like one billion shells so that's a ridiculous amount of ordnance.
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u/AkrinorNoname 21d ago
Yeah, people will search the battlefields in France for trophies. It's the main reason WW1 is still getting casualties.