Vermiculite often contains asbestos. They do sell horticultural vermiculite for gardening they claim to be asbestos free, but I read that it's dangerous for the people who work in the mines and I don't use it anymore.
They say perlite is ok. We use rice hulls for seedling soil now, but don't know how that would work in papercrete.
http://www.hummert.com/ProductDetail.aspx?Page=ProductSearchList.aspx&ID=9062&Text=rice%20hulls
It really IS compressed and goes a long way.
Christine
At 06:11 AM 4/30/2011, you wrote:
Thanks, Lee.
Next time I go to Missouri I will drop by there and pick up several bags of perlite.
Their Earth City location is right on the way.
Alan in Michigan
--- On Fri, 4/29/11, Lee Coates <hostas@classicnet.net> wrote:
Saturday, April 30, 2011
Re: [papercreters] Everybody working hard?
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