Paul Lewing on thu 15 apr 99
Here's a question I've been wondering about for some time. We talk a
lot about the dangers of clay and glaze dust, but is there any
difference in toxicity between unfired clay dust and dust that has been
bisqued? I was blowing dust off some bisqued stuff ( into my spray
booth) and was curious.
Paul Lewing, Seattle
elizabeth l gowen on fri 16 apr 99
Paul, my understanding of the damage the clay dust causes is because the
material is very fine, can become airborne and thus inhaled,get past the
cilia ( generally by clogging them and rendering them inactive as filters in
the nose) The dust gets into the delicate tissue of the lungs where it
causes inflammation and scarring. If the fired dust is fine enough to be
airborne and inhaled it will also be able to do damage.
-----Original Message-----
From: Paul Lewing
To: CLAYART@LSV.UKY.EDU
Date: Thursday, April 15, 1999 7:56 AM
Subject: bisque dust
>----------------------------Original message----------------------------
>Here's a question I've been wondering about for some time. We talk a
>lot about the dangers of clay and glaze dust, but is there any
>difference in toxicity between unfired clay dust and dust that has been
>bisqued? I was blowing dust off some bisqued stuff ( into my spray
>booth) and was curious.
>Paul Lewing, Seattle
>
John K Dellow on fri 16 apr 99
My understanding is that the fired stuff is harder , will form little
balls in the lungs & will bounce around when you breath ripping shit out
of them .
Paul Lewing wrote:
>
> ----------------------------Original message----------------------------
> Here's a question I've been wondering about for some time. We talk a
> lot about the dangers of clay and glaze dust, but is there any
> difference in toxicity between unfired clay dust and dust that has been
> bisqued? I was blowing dust off some bisqued stuff ( into my spray
> booth) and was curious.
> Paul Lewing, Seattle
--
John Dellow "the flower pot man"
ICQ : #2193986 {jacka}
E-mail : dellowjk@kewl.com.au
25 Hugh Guinea Ct, Worongary Q 4213
Ph:+61-7-55302875 Fax:+61-7-55253585
Home Page http://www.welcome.to/jkdellow
Edouard Bastarache on sat 17 apr 99
------------------
Hello John Dellow(jacka),
it depends on the concentration of cristalline silica in the dust which
appears,
from my own experience, to be a mixed dust.Before stating an opinion we
should know
how this dust was generated=3B for instance is it really solely a bisque =
dust
or a mixture of
=22household=22 dust plus dust from raw clays used for producing pots in a
nearby
wheelroom plus dust from the glaze area added to the dust coming from
bisque pots.
We dont even know from experience the average amount of dust generated by
bisque
pots sitting on shelves, where are the studies dealing with this issue?
From my own experience certain clays seem to shed dust while others dont.
I have tested over 150 c/9R clay recipies over the last 2 years and only a
very few
seemed dusty to the touch when taken out of the bisque kiln.
I think Paul should investigate this problem himself,dont forget the dust
that is resting on pots cannot do any harm as long as it stays on the pots,
you cannot breath dust sitting on pots plus the pots themselves(lafff).
Private consultants and labs could help in the investigation.
Later,
Edouard Bastarache
edouardb=40sorel-tracy.qc.ca
http://www.sorel-tracy.qc.ca/=7Eedouardb/
-----Message d'origine-----
De : John K Dellow =3Cdellowjk=40kewl.com.au=3E
=C0 : CLAYART=40LSV.UKY.EDU =3CCLAYART=40LSV.UKY.EDU=3E
Date : 16 avril, 1999 12:51
Objet : Re: bisque dust
=3E----------------------------Original message----------------------------
=3EMy understanding is that the fired stuff is harder , will form little
=3Eballs in the lungs =26 will bounce around when you breath ripping shit =
out
=3Eof them .
=3E
=3EPaul Lewing wrote:
=3E=3E
=3E=3E ----------------------------Original =
message----------------------------
=3E=3E Here's a question I've been wondering about for some time. We talk a
=3E=3E lot about the dangers of clay and glaze dust, but is there any
=3E=3E difference in toxicity between unfired clay dust and dust that has =
been
=3E=3E bisqued? I was blowing dust off some bisqued stuff ( into my spray
=3E=3E booth) and was curious.
=3E=3E Paul Lewing, Seattle
=3E
=3E--
=3E
=3E John Dellow =22the flower pot man=22
=3E ICQ : =232193986 =7Bjacka=7D
=3E E-mail : dellowjk=40kewl.com.au
=3E 25 Hugh Guinea Ct, Worongary Q 4213
=3E Ph:+61-7-55302875 Fax:+61-7-55253585
=3EHome Page http://www.welcome.to/jkdellow
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