isn't fly ash fairly toxic?i haven't got my notes with me but I did research it once and it sounded a little bit scary from memory?
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No.
http://en.wikipedia.org/wiki/Fly_ash
Fly ash (at least the ones I have heard of having positive effects) are pozzolanic, unlike wood ash. Wood ash would simply be another filler, like paper but without the higher air entrainment properties of paper pulp.
Obviously, YMMV and feel free to test things out and let us know if you find differently.
- E
--- In papercreters@yahoogroups.com, <diggingfortreasure@...> wrote:
>
> So this might seem like a silly question but would you all think that fine screened ashes from burned fire wood would also serve in a similar way as coal fly ash??
>
> Jackie
>
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