permaculture

[venaurafarm <venaurafarm@bellsouth.net>]

On 3/30/2013 7:52 PM, ChildrensPeaceGuild wrote:
> A friend came across some cheap cinder block and wanted to make a raised bed, 
> but had read they contain fly ash.
> Does anyone have recommendations/experience regarding this?

Call the concrete products companies that produce these things and they 
will tell you what goes into them. I have heard that fly ash has been 
used for years. So, what toxic residues are in it? Possibilities:
mercury
cadmium
cobalt
lead
?
?
?