On the topic of fly ash

["Lynda M Lukasik" <llukasik@worldchat.com>]

Does anyone have any idea what players in the incineration business mean
when they describe fly ash as being 'neutralized'?  Canadian Waste
(formerly Laidlaw) uses a patented technique to 'neutralize' bottom and fly
ash prior to shipping the ash off to landfill.  The claim is that this
technique 'renders bottom ash non-hazardous'  - not clear what becomes of
the fly ash.  Because the method used is patented, community members have
been denied any explanation of what exactly is done to the ash.  

Anyone have any understanding of this method and whether it really does
render  bottom ash non-hazardous?

Cheers,
Lynda Lukasik
Hamilton, Ontario