> On Tue, 9 Sep 2008 16:06:04 +0100, Bear gmail.com>
> wrote:
>

>>Flour (and by implication wheat storage areas) is notorious for going
>>boom when you don't want it to ... I clearly recall seeing the US news
>>when I was on the farm in Ca., about 25 years ago, and seeing a report
>>of a huge grain storage silo having gone up in the most spectacular way.
>>While it looked entertaining, it killed a couple of folk, which rather
>>took the shine off the amusing sight of a tidal wave of tens of
>>thousands of tons of grain making its way down the road.

>
> Flour has been known (in powder-in-the-air form) to cause huge
> explosions.