Edouard Bastarache on thu 29 mar 01
Edouard Bastarache
Irr=E9ductible Qu=E9becois
Sorel-Tracy
Dans / In "La Belle Province"
edouardb@sorel-tracy.qc.ca
http://www.sorel-tracy.qc.ca/~edouardb/
----- Message d'origine -----
De : Edouard Bastarache
=C0 :
Envoy=E9 : 29 mars, 2001 13:29
Objet : Re: Re: Ball/dioxin? help me
> Hello Bruce,
>
> what is meant by this EPA official is that ball clays are "heat-treated=
"
> before being put on the market and are then non-toxic.
>
> Dr. Jan Anton Gilles working at the Flemisch Institute for Environmenta=
l
> Research told us (via an e-mail in french to me that I posted to the li=
st
> last
> January) that dioxins decompose at 1,000 C.
>
> It would be interesting to know at what temperature ball clay companies
> treat
> their products.
>
> Later,
>
> Edouard Bastarache
> Irr=E9ductible Qu=E9becois
> Sorel-Tracy
> Dans / In "La Belle Province"
> edouardb@sorel-tracy.qc.ca
> http://www.sorel-tracy.qc.ca/~edouardb/
> ----- Message d'origine -----
> De : Bruce Girrell
> =C0 :
> Envoy=E9 : 29 mars, 2001 09:41
> Objet : Re: Ball/dioxin? help me
>
>
> > > According to EPA (David Cleverly, Washington DC),
> > > as published in CM, January issue, page 8, dioxin-containing
> > > ball clays may be used safely:" The good news is that once the
> > > ball clay has been commercially processed in a kiln before it is so=
ld
> > > to potters, all the dioxin is removed. We have verified this in EPA=
's
> > > laboratories. So you can rest easy and continue making great art ou=
t
> > > of ball clay."
> >
> > The above statement is undoubtedly true, because the dioxins will bur=
n
off
> > in the firing. The only problem with this is that dioxins are not rea=
lly
> > dangerous _until incinerated_.
> >
> > Stay away from the kikn exhaust.
> >
> >
> >
> > > So, go figure why they printed this on the bag.
> >
> > My guess is that they were required to.
> >
> >
> > Bruce "burned up" Girrell
> >
> >
>
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>
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