Paul Herman on thu 1 jan 04
John,
Bone ash is by definition already fired (calcined) to above red heat.
Bone meal (used by gardeners) is not.
So, I don't think we need worry about the prions in our bone ash.
Best wishes,
Paul Herman
Great Basin Pottery
423-725 Scott Road
Doyle, California 96109 US
potter@psln.com
----------
>From: John Rodgers
>To: CLAYART@LSV.CERAMICS.ORG
>Subject: Re: =86 =86 =86 bone ash from mad cows?
>Date: Thu, Jan 1, 2004, 2:49 PM
>
> I would exercise extreme but reasonable caution. Mask and gloves when
> handling the ash or glaze dry. And also when working with the bone ash
> containing glaze until such times as it is fired onto the pot!! If using
> a made up Bone ash substitute, created from minerals, then no problem.
>
> My $0.02.
>
> John Rodgers
> Chelsea, AL
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