Reentrant wrote:
http://en.wikipedia.org/wiki/Grain_dust_explosion

On Mythbusters they created some pretty impresive fireballs using sawdust
and flour in an air-cannon, but non-dairy-creamer was even better.
http://www.youtube.com/watch?v=yRw4ZRqmxOc


Mmm. Non-dairy creamer :-)

I had a job once restocking vending machines, and scoffing spoons of
that when one was looking. They may have noticed my weight ballooning
though...

Are vending machines designed sufficiently to contain / avoid powder
related explosions?

--
Adrian C