Quote Originally Posted by Adam500 View Post

As for the basis, you've never heard of Dust explosions? There are several examples of flour mills going completely up because of this phenomena. Fruits like the Suna Suna no Mi should be able to pull this off as well.
I hadn't heard of Dust explosions before, though according to the wiki article you linked the dust has to be combustible beforehand. I think that would disqualify NaCl, but certainly another kind of salt could do it.
What? No it doesn't. Titanium and Aluminum dust can cause a dust explosion. It just needs to be fine particulate matter in a large enough density in an environment with sufficient oxygen.