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salt kilns and the environment

updated sat 6 dec 97


Nan Rothwell on fri 5 dec 97

Subject: Re: Salt Kilns and the Environment

Here's an old ClayArt posting I saved. Since I too fire salt,I thought I
might want to dig it out in self defense one day. I don't know if the author
is still on ClayArt, but you might want to contact him.

Also, for what it's worth, my next-door neighbor when I used to live in
Crozet, Virginia was an environmental scientist who was initially quite
concerned abour my plans to build and fire a salt kiln. He dug around,
watched me fire, measured things, and concluded that my firing (18 hours of
propane) was creating less of a problem than "half a minute of emissions from
a jumbo jet." As for the salt itself, he said it made "virtually no impact"
except in the immediate area of the kiln shed. I quoted him, with his
permission, at the hearing when I applied for a zoning "special use permit"
-- but that is another story...

Hope this helps,
Nan Rothwell in Nelson County, Virginia

"Sun, 10 Aug 1997 11:06:37 EDT
From: Alex Williams
Subject: Salt glazing kiln wash Zirconium?

About a year ago, my wife and I took a trip to England. After renting a car
and avoiding some Brits, we found our way to Mick Casson's Wobage Farm
Pottery. There was a whole crew working on the property surrounded by 14th
Century buildings. Nonetheless, Mick was getting over some ill health, and
had just started potting again. The crew was building a new salt kiln, and
had some interesting news. An equivalent to our EPA had come out and taken
some readings from the stack of their old salt kiln and found a neutral
reading. Kind of goes against everything we've been told. But my
understanding is that there was not enough salt introduced to effect the
emissions. Good news for those who want to salt.
The group was covering the interior of the kiln with zirconium

----------------------------Original message----------------------------
Help me please! I am in immediate need of documentation and information
regarding the emissions of a salt kiln. The state department of natural
resources is coming on Friday to inspect the salt firing process to see if
it meets their air quality standards. Any technical info regarding
emissions would be greatly appreciated. I have heard that the chlorine
emitted during a firing is less than what an average back yard swimming
pool gives of in a day, but I need to be able to prove this. Thanks!

Randy Becker