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Have a look at the notable incidents dents in flour mills
Did a site visit with the engineering firm i worked for. Didn't need to take tools, they provided a full bronze kit for you to use, so there was no chance of sparks. This was 45years ago.
The precautions must still be working, it is still in use google view
paininthe
https://en.m.wikipedia.org/wiki/Dust_explosion
Have a look at the notable incidents dents in flour mills
I can give you details of how to do one at home which gives a big pop and covers your lawn in flour. Amusing 4 year olds and bemusing my wife.