Comment by Retric

> for a small enough particle size and an oxidizer concentration close enough to stoichiometric, you will.

Sure but nobody is going to ship large quantities of magnesium like that: “Use proper packaging: Ensure the magnesium is sealed in moisture-proof, airtight containers.” https://www.freightamigo.com/blog/hs-code-for-containing-at-...

> Small hydrogen balloons do not in fact go bang

It’s not a supersonic detonation but even normal balloons pop with a small bang, pure hydrogen balloons are louder. Though a you mention hydrogen + oxygen is significantly more extreme.